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Biomagnification tues reg
 

Biomagnification tues reg

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    Biomagnification tues reg Biomagnification tues reg Presentation Transcript

    • Greet Ms. Negreros at the door! Class starts in… 5 minutesWarm Up is on p.7!Learning Target: IWBATdescribe biomagnification.
    • Greet Ms. Negreros at the door! Class starts in… 4 minutesWarm Up is on p.7!Learning Target: IWBATdescribe biomagnification.
    • Greet Ms. Negreros at the door! Class starts in… 3 minutesWarm Up is on p.7!Learning Target: IWBATdescribe biomagnification.
    • Greet Ms. Negreros at the door! Class starts in… 2 minutesWarm Up is on p.7!Learning Target: IWBATdescribe biomagnification.
    • Greet Ms. Negreros at the door! Class starts in… 1 minutesWarm Up is on p.7!Learning Target: IWBATdescribe biomagnification.
    • Class has started!Warm Up is on p.7!Learning Target: IWBATdescribe biomagnification.
    • Your learning target should be written down… You haveLearning Target: Homework:•IWBAT describebiomagnification. 3 Study! Minutes left Warm Up is on p.7!
    • You should be working on the warm up… You haveLearning Target: Homework:•IWBAT describebiomagnification. 2 Study! Minutes left Warm Up is on p.7!
    • If you finish early, you should sit quietly… You haveLearning Target: Homework:•IWBAT describebiomagnification. 1 Study! Minute left Warm Up is on p.7!
    • Let’s get started! Tutorials: After school
    • Warm Up Review1. In the nitrogen cycle, what is the role of bacteria that live in the roots oflegumes? a. change nitrogen gas into proteins that can be used by plants b. change nitrogen gas form the atmosphere into ammonia andammonium ions c. break down nitrogen compounds in the soil into nitrogen gas d. convert nitrate ions into ammonium ions2. Which of the following statements about the nitrogen cycle is true?a. Although nitrogen is the most abundant atmospheric gas, plants cannot useit from the air.b. Adding man-made fertilizers to farm fields will take needed nitrogen fromthe cycle.c. The occurrence of lightning takes extra nitrogen molecules from theatmosphere and the cycle.d. Bacteria located in the soil trap excess atmospheric oxygen and help itenter plant roots.
    • KEY points• Biodiversity is the variety of all life• Humans have a BIG impact on the biosphere• Biomagnification increases the chemicals present at higher feeding levels 90
    • KEY points• Biodiversity is the variety of all life• Humans have a BIG impact on the biosphere• Biomagnification increases the chemicals present at higher feeding levels 60
    • KEY points• Biodiversity is the variety of all life• Humans have a BIG impact on the biosphere• Biomagnification increases the chemicals present at higher feeding levels 30
    • KEY points• Biodiversity is the variety of all life.• Humans have a BIG impact on the biosphere.• Biomagnification increases the chemicals present at higher feeding levels. 20
    • KEY points• Biodiversity is the variety of all life.• Humans have a BIG impact on the biosphere.• Biomagnification increases the chemicals present at higher feeding levels. 10
    • How Human Activities Affect Ecosystems• Humans are part of Earth’s biodiversity – BIODIVERSITY= the variety of all life• Human actions can greatly affect Earth’s biological, physical and chemical processes. – Natural Resource= part of the environment that is used by humans or other organisms.• Earth’s supply of many natural resources is limited and people sometimes use more of a resource than they actually need. – Examples: land, water, and air
    • Examples of how humans affect ecosystem• Deforestation= removal of all trees in a forest – Destroys habitat, forcing species to move out of the area  reduces biodiversity – Removing Key Stone Species= species that determines the community• Pollution= release of harmful substances or energy into air, soil, and water
    • Examples of how humans affect ecosystem• Global Warming= increase in average temperatures• Pesticides can also harm the environment. – Can make an ecosystem unstable by sickening or killing animals other than those
    • A little more about Pesticides…• Sometimes, pesticides eaten by one organism are passed on to other organisms through the food chain.• If a pesticide does not kill an animal that consumes it, it may be stored in the organism’s tissues.• These pesticides are passed on to predators that eat the first animal.
    • bioMAGNIFICATION• Biomagnification= the process in which chemicals become more concentrated at higher feeding levels.
    • Human Activities that Help the Environment• Drive fuel efficient cars• Buy energy efficient appliances• Plant only native species in gardens• Use less paper• Use less water for washing, lawns• Grow and buy organic food• Eat only sustainably harvested fish
    • CLASSWORK• Pages 10-11 must be finished in class!