The age of fossils can sometimes be determined by radiometric dating,.pdf

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The age of fossils can sometimes be determined by radiometric dating, which is based on the constant rate of decay of radioactive isotopes. The time required for half of a radioactive isotope to decay is called the half-life of that isotope. For example, the isotope carbon-14 has a half-life of 5, 730 years. Suppose it is determined that a fossilized leaf contains 12.5% of the carbon-14 that was present when the fossil formed. How old is the fossil? Express your answer numerically. Only a very small percentage of organisms actually Based on the information in the table below, rank the abundance of fossils of organisms A-E. Solution Answer: 17190 years 12.5 % C14 T1/2 of C14 = 5,730 years 12.5% ----->25%----->50%------->100% It has crossed three half lifes = 5,730 x 3 = 17190 years.

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2.5 1. Why does earth have seasons? 2. What is the origin of the term Equinox? 3. What is the orgin of the term Solstice? 4. Most people in the US think the seasons are caused by changing distance between the Eart and the Son. Why do you think this is? 5. What type of seasons would the Earth have if its spin axis was in the plane of its orbit? 6. What type of seasons would the Earth have if its spin axis was exactly perpendicular to its orbital plane? 7. What do you think would happen if the Earth\'s spin axis wobbled randomly around on a monthly basis? 8. What does the term latitude mean? 9. What is meant by the term Equator? 10. What is an ellipse? 11. What are meant by the terms perihelion and aphelion? 12. If it is summer in Australia, what season is it in New Mexico? Solution 1 question at a time: 2.5.1 We have seasons because the earth is tilted (wonky) as it makes its yearly journey around the sun. TheEarth\'s axis is tilted at an angle of 23.5 degrees. This means that the Earth is always \"pointing\" to one side as it goes around the Sun..

2.51. Why does earth have seasons2. What is the origin of the t.pdf

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Write the product as a sum or difference. Write the product as a sum.pdf

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Which osmotic and ionic strategies must marine teleost fishes employ.pdf

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What types of social and culture trends affect REI? Solution 1. Social and cultural trends affect a community’s behavior and create greater demand for various types of products. For example, many communities are aware of stresses to the ecosystem caused by population demands, pollution and other factors. This awareness encourages many to engage in what has heretofore been considered only recreational activities such as walking and cycling. These are activities that are now being taken up as a means or relieving traffic problems or addressing air quality issues. This has increased the demand for high quality footwear or city-friendly bicycles. 2. Social and cultural trends also affect the average retirement age and how older persons are spending their retirement. Advances in medicine have greatly improved the quality of life for retirees. Also, social attitudes have changed as people accept that retirement is not simply the time when a person who has worked hard all their life now sits and waits to die. Retirees are more active than ever before, and they enjoy more disposable income as they have invested and saved toward retirement. This trend means that an heretofore untapped market catering to the older person or the retiree is opened up..

What types of social and culture trends affect REISolution1. .pdf

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Which of the following are in the order Primates? (Multiple answers) Tarsians Lemurs Gorillas Lorises Solution Answer: All the mentioned (Tarsians, Lemurs, Gorillas & Lorises) animals come under the order primates. The primates include the most familiar of the placental mammals, as the order includes Homo sapiens. Primates also include familiar animals, such as the chimpanzees, gorillas, and monkeys, as well as the somewhat less familiar lemurs, lorises. Some researchers prefer an alternate classification that divides the primates into 2 suborders: Prosimii (lemurs, lorises, and tarsiers) and Anthropoidea (monkeys, apes, and humans)..

Which of the following are in the order Primates (Multiple answers).pdf

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What are the issues and benefits of employing older workers? What are the issues and benefits of employing older workers? Solution Employing older workers has several benefits because of following factors : They bring experience along with them. They weere already tested in past. More confident and mature in approach. They older workers are more organized and honest. On the other side, having an older workers means, they might be technologically outdated. They might have health problems. Higher wages due to experience..

What are the issues and benefits of employing older workers Wh.pdf

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What is current I1? What is current I2? What is current I3? 14 V 10 13 4 12V 14 Dr. Birdwell asks that you solve for the currents as shown. If the actual current is in the opposite direction as shown, specify it as a negative current. EXAMPLE Solution Let potential at A and C =X let potential at D=Y and at B=14 V (X-14)=I4x6 0-X=I2x10 X-Y=12xI5 Y-12-X=4xI1 I4+I5=I1+I2 ((X-14)/6)+((X-Y)/12)=((Y-12-X)/4)+(-X/10) (6X/10)-(Y/3)=-2/3 Y-14=14xI3 I3=I2-I4 ((Y-14)/14)=(-X/10)-((X-14)/6) (Y/14)+(4X/15)=10/3 (6X/10)-(Y/3)=-2/3 X=1340/166 Y=1372/83 I1=((Y-12-X)/4)=-0.8855 A I2=(-X/10)=-0.8072A I3=((Y-14)/14)=0.1807A.

What is current I1What is current I2What is current I3 14 V 1.pdf

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Use your thoughts about the essay, , and your own reflections on your current and past relationship with Nature 1- Describe your relationship with the natural world. Give some serious thought to what Nature means and has meant to your life. Reflect on these questions: 2 -Do you think of yourself more apart from or more a part of Nature? 3- How connected do you feel the non-human occupants (i.e., animals, plants, organisms big and small) of Earth,? 4- To what degree do you relate your existence to theirs? 5 -When you hear the word “wilderness,” what associations do you make or feelings does it provoke in your mind? 6 -Do you hold value in far-off, wild places even though you will likely never physically experience them? 7 - What value does Horse Lick Creek hold for Barbara Kingsolver? Do you have a natural place that provides a similar benefit to you? If not, do you still appreciate the value such a place could provide and why it is important to protect such places? -The daughter of a doctor who would accept home-grown vegetables from patients too poor to pay in cash, Kingsolver was born in Annapolis, Maryland, and grew up in Nicholas County, Kentucky, a rural area where most people earned a subsistence income by farming. She earned degrees in biology from DePauw University and the University of Arizona, and has worked as a freelance writer and author since 1985. This is the kind of April morning no other month can touch: a world tinted in watercolor pastels of redbud, dogtooth violet, and gentle rain. The trees are begin ning to shrug off winter; the dark, leggy maple woods are shot through with gleam ing constellations of white dogwood blossoms. The road winds through deep forest near Cumberland Falls, Kentucky, carrying us across the Cumberland Plateau toward Horse Lick Creek. Camille is quiet beside me in the front seat, until at last she sighs and says, with a child\'s poetic logic, “This reminds me of the place I always like to think about.” Me too, I tell her. It’s the exact truth. I grew up roaming wooded hollows like these, though they were more hemmed-in, keeping their secrets between the wide-open cattle pastures and tobacco fields of Nicholas County, Kentucky. My brother and sister and I would hoist cane fishing poles over our shoulders, as if we intended to make ourselves useful, and head out to spend a Saturday doing nothing of the kind. We haunted places we called the Crawdad Creek, the Downy Woods (for downy woodpeckers and also for milkweed fluff), and—thrillingly, because we’d once found big bones there—Dead Horse Draw. We caught crawfish with nothing but patience and our hands, boiled them, with wild onions over a campfire, and ate them and declared them the best food on earth. We collected banana-scented pawpaw fruits, and were tempted by fleshy, fawn-colored mushrooms but left those alone. We watched birds whose names we didn’t know build nests in trees whose names we generally did. We witnessed the unfurling of hickory an.

Use your thoughts about the essay, , and your own reflections on y.pdf

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12-1: Group Work: Preliminary and Program Development Research Purpose To assess your ability to: Determine the role of research in health education and health promotion. Distinguish the four phases, based on research, in the design of health promotions programs. Discuss some typologies of research, relating to the type of data, research styles, and research approach. Action Items In this assignment, you will conduct preliminary research to identify behavioral and environmental factors contributing to a health problem of your choice, as well as relevant stakeholders. This is what you will do: Select a health problem of your choice Select at least three of the following techniques: Epidemiological data Formal and informal interviews with key informants Group sessions Focus group interviews Questionnaires Rapid participatory appraisal technique Use the techniques you have selected to collect data on behavioral and environmental factors contributing to the health problem you chose, as well as relevant stakeholders. Write a report that includes the health problem, techniques, and findings. Submit your report and be prepared to share it with your classmates. Submission Instructions Complete and submit this assignment per your professor\'s instructions. phc-112 health education and promotion / please i need the answer very quickl Introduction The focus this week is the role of research in health promotion. We will consider the four phases of research in the design of health promotions programs. These are: preliminary research, program development research, monitoring, and evaluation. Preliminary research focuses on diagnosis of the existing situation, the environmental and behavioral causes of health problems and the determinants of these causes. Program development research facilitates the development of programs and action plans. Monitoring aims to examine the ways in which programs are implemented, including the processes of participation and collaboration, in order to keep track of and/or improve the program. Evaluation involves a review of the results achieved in the program in terms of its effectiveness, efficiency and validity. We will also consider the types and styles of research. Types of research include qualitative and quantitative. Some common research styles discussed in your textbook include experimental, survey, documentary-historical, and field study. During a group project this week, you will have an opportunity to conduct preliminary research to identify behavioral and environmental factors contributing to a health problem. Solution - since you did not clarified for which specific question you need answer so am starting off according to my understanding ; ° Preliminary research to identify behavioural and environmental problems affecting our health :- ~ preliminary research demonstrates the health benefits of sustainable communities. However, the impact of mediating and moderating factors within the built environment on health mu.

12-1 Group Work Preliminary and Program Development ResearchPurp.pdf

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\'\'\' This homework consists of 8 problems. The first 7 ask that you fill in a blank in the code below. The last problem asked you to draw some conclusions from the data generated. You should submit this .py file with the blanks filled in. Problem 8 should be answered as a triple quoted comment after the code. \'\'\' \'\'\' Type your name here \'\'\' # The Bells # Edgar Allen Poe theBells = \'\'\' HEAR the sledges with the bells, Silver bells! What a world of merriment their melody foretells! How they tinkle, tinkle, tinkle, In the icy air of night! While the stars, that oversprinkle All the heavens, seem to twinkle With a crystalline delight; Keeping time, time, time, In a sort of Runic rhyme, To the tintinnabulation that so musically wells From the bells, bells, bells, bells, Bells, bells, bells— From the jingling and the tinkling of the bells. Hear the mellow wedding bells, Golden bells! What a world of happiness their harmony foretells! Through the balmy air of night How they ring out their delight! From the molten-golden notes, And all in tune, What a liquid ditty floats To the turtle-dove that listens, while she gloats On the moon! Oh, from out the sounding cells, What a gush of euphony voluminously wells! How it swells! How it dwells On the Future! how it tells Of the rapture that impels To the swinging and the ringing Of the bells, bells, bells, Of the bells, bells, bells, bells, Bells, bells, bells— To the rhyming and the chiming of the bells! Hear the loud alarum bells, Brazen bells! What a tale of terror, now, their turbulency tells! In the startled ear of night How they scream out their affright! Too much horrified to speak, They can only shriek, shriek, Out of tune, In a clamorous appealing to the mercy of the fire, In a mad expostulation with the deaf and frantic fire, Leaping higher, higher, higher, With a desperate desire, And a resolute endeavor Now—now to sit or never, By the side of the pale-faced moon. Oh, the bells, bells, bells! What a tale their terror tells Of Despair! How they clang, and clash, and roar! What a horror they outpour On the bosom of the palpitating air! Yet the ear it fully knows, By the twanging And the clanging, How the danger ebbs and flows; Yet the ear distinctly tells, In the jangling And the wrangling, How the danger sinks and swells,— By the sinking or the swelling in the anger of the bells, Of the bells, Of the bells, bells, bells, bells, Bells, bells, bells— In the clamor and the clangor of the bells! Hear the tolling of the bells, Iron bells! What a world of solemn thought their monody compels! In the silence of the night How we shiver with affright At the melancholy menace of their tone! For every sound that floats From the rust within their throats Is a groan. And the people—ah, the people, They that dwell up in the steeple, All alone, And who tolling, tolling, tolling, In that muffled monotone, Feel a glory in so rolling On the human heart a stone— They are neither man nor woman, They are n.

This homework consists of 8 problems. The first 7ask that .pdf

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this is verilog HDL classWhat are the basic components of a module.pdf

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The Hox genes are responsible for determining the anterior-posterior identity of body regions (segments) in the developing insect embryo. Different Hox genes are turned on (expressed) in different segments of the body, and in this way they determine which segments become head and which thorax, which develop legs and which antennas. One surprising thing about the Hox genes is that they usually occur in a row on the same chromosome and in the same order as the body regions that they control. For example, the fruit fly Drosophila Melanogaster has eight Hox genes located on a chromosome in exactly the same order as the body regions in which they are expressed, from head to tail. If the eight genes were thrown randomly onto the same chromosome, what is the probability that they would line up in the same order as the segments in which they expressed? Solution This is a permutations problem, where you can think of each Hox gene being \"chosen\" for a \"slot\" in the chromosome has its own probability. Contrast this to combinations problems, where order does NOT matter. Here\'s the formula for the number of possible permutations: P = n! / (n-k)! where n = the pool of genes, and k = the number of genes we\'re pulling out. There are 8 genes we\'re working with, and we\'re putting them all in a chromosome. So the number of permutations is: P = 8! / (8-8)! = 8! / 0! = 8!/1 = 8*7*6*5*4*3*2*1 = 40320 different permutations. So, that\'s how many different ways these genes can be chaotically and randomly oriented. But we want them in a very specific order - one after the next, specifying a position for each and every gene. Normally in permutations problems, you\'d have some leeway with how many different ways the proposed sequence can be achieved (e.g. drawing a red then blue marble, when there are 20 red marbles and 10 blue marbles). But in our case, this number is 1, because there\'s only one way to achieve our proposed sequence. Therefore, the probability is 1/40320, or 0.0025% (about a 400th of a percent). Notice that this has logical implications for the function of these Hox genes; they were probably slowly built off one another in an evolutionary sequence as opposed to randomly falling into place. An organism with a mutation in their Hox genes will have grotesque limb abberations - an example is a Drosophila mutant with a leg coming out of its head..

The Hox genes are responsible for determining the anterior-posterior.pdf

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Simple java program: Topic: Binary File I/O Create a simple application called contact list that will accept a person’s first and last name from a dialog box, the accept a phone number from a dialog box. Now save that information to a binary file. You’ll only have one record. ---------------------------- Next, Go back to your contact list application modify it such that that will accept a person’s first and last name from a dialog box, then accept a phone number from a dialog box. It will repeat this process until the user types in some sentinel value (terminating value) for name. If the file doesn’t exist currently, you’ll create a new file. If it does, you’ll append to it. Solution public class SimpleJava { string first,last, phone; publicstaticvoid main(String[] args) throws Exception { String first = System.console().readLine(); DataOutputStream out = openOutputStream(\"binary\"); while(!first.equals(\"Terminate\")) { String last = System.console().readLine(); String phone = System.console().readLine(); out.writeUTF(first+last+phone); String first = System.console.readline(); } } }.

Simple java programTopic Binary File IOCreate a simple applic.pdf

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// READ BEFORE YOU START: // You are given a partially completed program that creates a list of pets with their list of checkups. // Each pet has the corresponding information: name, breed, and a linked list of checkups. // To begin, you should trace through the given code and understand how it works. // Please read the instructions above each required function and follow the directions carefully. // If you modify any of the given code, the return types, or the parameters, you risk failing the automated test cases. // // You are to assume that all input is valid: // Valid name: String containing alphabetical letters beginning with a capital letter // Valid breed: String containing alphabetical letters beginning with a capital letter // Valid date: String in the following format: \"MM/DD/YYYY\" ex: \"01/01/2010\" // All input will be a valid length and no more than the allowed amount of memory will be used // // Q1 : CLASS METHODS Part 1 : Constructor and Accessor Methods for Pet class in Pet.cpp file ( 5 points) // Q2 : CLASS METHODS Part 2 : Class methods for Pet class in Pet.cpp file (10 points) // Q3 : Add Function in hw09.cpp file ( 5 points) // Q4 : Search Function in hw09.cpp file (10 points) // Q5 : Remove One Function in hw09.cpp file (15 points) // Q6 : Implement cin / cout for the lines in main without modifying the functionality ( 5 points) #include #include #include #include \"Container.h\" #include \"Pet.h\" #include \"Checkup.h\" using namespace std; // forward declarations void flush(); void branching(char); void helper(char); void add_pet(string, string); Pet* search_pet(string, string); void remove_pet(string, string); void clean_up(Pet*); void print_all(); void remove_all(); Container* list = NULL; // global list int main() { _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF); // Use to check for memory leaks in VS char ch = \'i\'; do { // Q6: Implement cin / cout for the lines below without modifying the functionality (5 points) // (change all printf statements to cout and read the next char using cin) printf(\"Please enter your selection\ \"); printf(\"\\ta: add a new pet to the list\ \"); printf(\"\\tc: add a new checkup for a pet\ \"); printf(\"\\tr: remove a pet from the list\ \"); printf(\"\\tp: print all pets on the list\ \"); printf(\"\\tq: quit\ \"); ch = getchar(); // End Q6 flush(); branching(ch); } while (ch != \'q\'); remove_all(); list = NULL; return 0; } void flush() { int c; do c = getchar(); while (c != \'\ \' && c != EOF); } void branching(char c) { switch (c) { case \'a\': case \'c\': case \'r\': case \'p\': helper(c); break; case \'q\': break; default: printf(\"\ Invalid input!\ \ \"); } } // The helper function is used to determine how much data is needed and which function to send that data to. // It uses pointers and values that are returned from some functions to produce the correct ouput. // There is no implementation needed here, but you should study this function and know how it works. //.

READ BEFORE YOU START You are given a partially completed pr.pdf

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Select oneYes, because the correlation appears to be strong.No,.pdf

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Prove the hyperbolic function formula sinhx(2x)=2sinhxcoshxSol.pdf

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1) What data structure will you use for iterative post-order tree traversal? Explain how. 2) Given a binary tree (not necessarily a BST), return all root-to-leaf paths. Explain two solutions: one using stack, another one using queue. No code, just psuedocode + Description Solution 1) stack data structure is used for iterative post-order tree traversal. The idea is to move down to leftmost node using left pointer. While moving down, push root and root’s right child to stack. Once we reach leftmost node, print it if it doesn’t have a right child. If it has a right child, then change root so that the right child is processed before. Algorithm 2)DFS uses stack In depth-first search the idea is to travel as deep as possible from neighbour to neighbour before backtracking. What determines how deep is possible is that you must follow edges, and you don\'t visit any vertex twice. pseudocode: BFS uses queue BFS starting from vertex v: create a queue Q mark v as visited and put v into Q while Q is non-empty remove the head u of Q mark and enqueue all (unvisited) neighbours of u.

1) What data structure will you use for iterative post-order tree tr.pdf

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Other diseases, called collagen vascular diseases, affect the protein collagen, the main component of collagen fibers Predict the possible consequences of defective collagen fibers on specific organs an tissues. How would the effects of a collagen vascular disease that affected only the collagen in reticular fibers effects seen with question 2? Why? Solution 2. ANS: Collagen: It is the most abundant animal protein on earth. It is present in the extra cellular spaces bones, tendons, ligaments, gums, teeth and wall of blood vessels. It is a homo dimer, made up of 3 identical polypeptide chains. The sequence of collagen is rich in glycine and prolins and the sequence is Glycine – Proline – Hydroxy proline. In the body 90% of the collagen is Type I collagen. Type I: skin, tendon, vascular ligature, organs and bone Type II: cartilage Type III: reticulate Type IV: forms basal lamina, the epithelium-secreted layer of the basement membrane. Type V: cell surfaces, hair and placenta Most of the collagen diseases are arisen due to the genetic defects or nutritional deficiencies. 1. Osteogenesis imperfect: It is a type I collagen autosomal disorder. In this bones and connective tissue are affected. 2. Chondrodysplasias: It is a type II collagen disease, mainly caused by mutations. In this skeletal bone are affected. 3. Alport syndrome: It is a genetic disorder. In this disorder kidneys and eyes are mostly affected in during the childhood. 4. Osteoporosis: It is mainly associated with reduced levels of collagen in the skin and bones. 5. Scurvy: It is mainly associated with vitamin C. Multiple collagen tissues are affected and leads to bleeding gums, loose of tooth, bones are fragile and internal hemorrhage. 3. ANS: Elastic collagen disorders are mainly caused by different mutations. Among this some types are lethal, leading to the rupture of arteries. This type of disorder occurs with the elastic collagen accumulation and elastotic degeneration. Ehlers Danlos syndrome is ten different types of disorder. Type III collagen mutation caused this disorder..

Other diseases, called collagen vascular diseases, affect the protein.pdf

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Discuss the origins of mitochondria and chloroplasts. Look at them in an evolutionary and ATP (energy) sense, please. Solution According to endosymbiotic theory, chloroplasts in cyanobacteria possess proton motive force in their membrane to drive protons through electron transport chain finally to drive ATP synthesis. This is followed by evolution of mitochondria in eukaryotes because of higher level of tissue organization during evolution of higher multicellular species i.e. The evolution has take place during 2.5 million years ago & hominids have evolved in this period and they have similar ETC as similar to present humans. The oxido-reduction mediating cytochrome complexes from complex-I, II, III & IV to synthesize ATP are similar even 10000 years ago during the evolution of low level eukaryotes to higher level of eukaryotes. Some of the changes in oxidative phosphorylation are only due to development of \"higher level of tissue organization\" in humans ETC has acquired due to natural selection to meet their energy needs as an evolutionary adaptation. Evolutionary adaptations include that sporophytes evolved gradually with increased size and with longer life, period and gametophyte size, associated existence is drastically reduced. Plants developed the following feature in their life cycle along with chlorophyll as food synthesizing adaptation according to endosymbiotic theory. The mechanism of origin of chloroplasts of eukaryotes (mainly land plants) originated by the engulfment (the method of endosymbiosis) of an ancestral photosynthetic bacterium by an ancestral eukaryotic cell, as a result of primitive evolutionary adaptation of land plants & aquatic plants. There are total two hypothesis regarding the two times of evolution of chloroplasts because engulfed bacterium by the eukaryotes was an alphaproteobacteria. This bacterium is an autotroph can carry out photosynthesis with mutual symbiosis to eukaryote result in \"anchoring respiration mechanism\" in the host eukaryotic cells, finally prokaryote, become a chloroplast. Primary endosymbiosis is said to have happened meticulously \"once\" followed by secondary endosymbiosis (the engulfment of an ancestral chloroplast-containing eukaryote by anther eukaryotic cell) in other lineages has occurred and has further diverged. Chloroplasts are the photosynthetic organelles of plats and they possess double membrane to maintain adequate proton gradient generated from the splitting of water molecules in the presence of light and further to promote ATP synthesis in the presence of ATPsynthase. This double membrane profoundly enables maintaining stable position of other cytochrome complexes, plastoquinone complexes of photosystem I & II between stroma and thylakoid membranes as part of evolutionary aspect. Endosymbiotic theory is about the evidence that supports the evolution of endosymbiotic organelles such as chloroplasts & mitochondria from prokaryotes. There are several similarities between th.

Discuss the origins of mitochondria and chloroplasts. Look at them i.pdf

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Match the following: 1. Natural killer cells 2. B cells 3. Cytoxic T lymphocytes 4. Helper T cells 5. Neutrophils A. Antibody producing cells B. Kills target cells after being activated via MHC C. Effector cell expressing the CD4 co receptor D. First cell to arrive where there is inflammation E. Lymphocyte with no T or B cell receptors Match the following: 1. Natural killer cells 2. B cells 3. Cytoxic T lymphocytes 4. Helper T cells 5. Neutrophils A. Antibody producing cells B. Kills target cells after being activated via MHC C. Effector cell expressing the CD4 co receptor D. First cell to arrive where there is inflammation E. Lymphocyte with no T or B cell receptors 1. Natural killer cells 2. B cells 3. Cytoxic T lymphocytes 4. Helper T cells 5. Neutrophils A. Antibody producing cells B. Kills target cells after being activated via MHC C. Effector cell expressing the CD4 co receptor D. First cell to arrive where there is inflammation E. Lymphocyte with no T or B cell receptors Solution 1. E Natural killer cell are 10 percent of total lymphocyte population but they are neither B cells nor T cells 2. 1 B-cells are antibody producing cells. 3.B Cytotoxic t cells recognise the foreign peptide in association with Claas1 MHC protein 4. C Helper T cells are Effector cells expressing the CD4 co receptor 5.D Neutrophil are the First cell to arrive where there is inflammation..

Match the following 1. Natural killer cells2. B cells3. Cy.pdf

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