Quiz - sreekkutty sb
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This document contains a 10 question science quiz about various natural phenomena including the largest reef system, mosquito biting habits, Earth Day date, Grand Canyon location, Dead Sea saltiness, the 3 R's of recycling, rhinoceros horn composition, islands studied by Darwin, alternative name for Ayers Rock, and definition of deforestation. The answers to the 10 questions are also provided.
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Crabs live in rocky shores, shallow oceans, and around volcanic vents. They eat small ocean animals, starfish, sea turtles, and birds. When threatened, crabs can snap off a leg and regrow it to escape, while some swim using their legs like paddles or have flat bodies suited for hiding. The report also discusses crab anatomy, habitats, diet, and includes a poem about crabs.
Fascinating sea otters
The sea otter lives in coastal waters less than 1 kilometer from shore, where it eats a variety of invertebrates and small fish for 3 hours per day. It uses tools like rocks to open shelled animals and is endangered due to overhunting and oil drilling, though protected areas and education efforts aim to help the species' recovery. The document concludes that sea otters are intelligent and predicts their numbers and range will increase so they are no longer threatened.
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Bigfoot's existence is questionable, but some ecosystems in North America could potentially support a creature like Bigfoot based on evidence from Gigantopithecus Blacki. Gigantopithecus Blacki was a large, herbivorous primate that survived in Asian rainforests, sharing physical similarities to descriptions of Bigfoot. Specifically, the Kodiak Island rainforest in Alaska contains abundant wildlife and resources matching the tropical forests inhabited by Gigantopithecus Blacki, making it possible for Bigfoot to live there if it exists.
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The document describes several key facts about seahorses:
- Male seahorses carry and incubate eggs in a brood pouch, are slimmer and less spiny than females, and have a curled tail to hook onto objects.
- Seahorses live in shallow tropical and temperate waters along coastlines worldwide and feed on tiny crustaceans and fish by rapidly inhaling water.
- Their habitats of coral reefs, sea grass, and mangroves are threatened by damage and lack of protection, forcing seahorses to adapt. Conservation organizations now work to protect seahorses and their habitats from further damage.
Arctic Foxes
Arctic foxes live in cold climates of northern regions like Canada, Alaska, northern Asia, and Europe. They have thick fur coats that change color between winter and summer to help camouflage them from prey and predators. Arctic foxes are solitary and omnivorous, eating small rodents, birds, eggs, fish, and carrion. They use their sharp teeth and claws to hunt and protect themselves. Litters typically contain 5-9 pups born in burrows. While not endangered, arctic foxes face threats from polar bears and humans hunting them for their valuable fur.
How much of the world remains unexplored
Human exploration has led to the discovery of new species and resources, but much of the planet remains unexplored. The Amazon rainforest, while relatively well-known, is only 10% explored, as is the case for the oceans, where an estimated 95% remains unexplored. Antarctica and the ocean depths also remain largely uncharted territories due to their extreme and inhospitable conditions. Advanced exploration techniques are needed to uncover the many unknown areas that still exist across the Earth.
Bigfoot
The document discusses the possibility that Bigfoot could exist in North American ecosystems based on similarities to Gigantopithecus blacki. It notes that Gigantopithecus blacki was able to survive in environments similar to some in North America, and that Bigfoot and Gigantopithecus blacki share physical similarities in size and diet. Specifically, it suggests that the Kodiak Island rainforest in Alaska could potentially support a creature like Bigfoot, as it provides resources and conditions comparable to the tropical forests inhabited by Gigantopithecus blacki.
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This document summarizes some of the animals that live in Antarctica. It describes fish like icefish and cod that have antifreeze to survive the cold waters. Several types of whales like blue whales and killer whales feed on krill in Antarctica. Seals have thick blubber to withstand the freezing temperatures, and penguins will huddle together to survive the winter. Krill are an important food source for many Antarctic animals.
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Crabs by andres
Crabs live in rocky shores, shallow oceans, and around volcanic vents. They eat small ocean animals, starfish, sea turtles, and birds. When threatened, crabs can snap off a leg and regrow it to escape, while some swim using their legs like paddles or have flat bodies suited for hiding. The report also discusses crab anatomy, habitats, diet, and includes a poem about crabs.
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The sea otter lives in coastal waters less than 1 kilometer from shore, where it eats a variety of invertebrates and small fish for 3 hours per day. It uses tools like rocks to open shelled animals and is endangered due to overhunting and oil drilling, though protected areas and education efforts aim to help the species' recovery. The document concludes that sea otters are intelligent and predicts their numbers and range will increase so they are no longer threatened.
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Bigfoot's existence is questionable, but some ecosystems in North America could potentially support a creature like Bigfoot based on evidence from Gigantopithecus Blacki. Gigantopithecus Blacki was a large, herbivorous primate that survived in Asian rainforests, sharing physical similarities to descriptions of Bigfoot. Specifically, the Kodiak Island rainforest in Alaska contains abundant wildlife and resources matching the tropical forests inhabited by Gigantopithecus Blacki, making it possible for Bigfoot to live there if it exists.
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- Male seahorses carry and incubate eggs in a brood pouch, are slimmer and less spiny than females, and have a curled tail to hook onto objects.
- Seahorses live in shallow tropical and temperate waters along coastlines worldwide and feed on tiny crustaceans and fish by rapidly inhaling water.
- Their habitats of coral reefs, sea grass, and mangroves are threatened by damage and lack of protection, forcing seahorses to adapt. Conservation organizations now work to protect seahorses and their habitats from further damage.
Arctic Foxes
Arctic foxes live in cold climates of northern regions like Canada, Alaska, northern Asia, and Europe. They have thick fur coats that change color between winter and summer to help camouflage them from prey and predators. Arctic foxes are solitary and omnivorous, eating small rodents, birds, eggs, fish, and carrion. They use their sharp teeth and claws to hunt and protect themselves. Litters typically contain 5-9 pups born in burrows. While not endangered, arctic foxes face threats from polar bears and humans hunting them for their valuable fur.
How much of the world remains unexplored
Human exploration has led to the discovery of new species and resources, but much of the planet remains unexplored. The Amazon rainforest, while relatively well-known, is only 10% explored, as is the case for the oceans, where an estimated 95% remains unexplored. Antarctica and the ocean depths also remain largely uncharted territories due to their extreme and inhospitable conditions. Advanced exploration techniques are needed to uncover the many unknown areas that still exist across the Earth.
Bigfoot
The document discusses the possibility that Bigfoot could exist in North American ecosystems based on similarities to Gigantopithecus blacki. It notes that Gigantopithecus blacki was able to survive in environments similar to some in North America, and that Bigfoot and Gigantopithecus blacki share physical similarities in size and diet. Specifically, it suggests that the Kodiak Island rainforest in Alaska could potentially support a creature like Bigfoot, as it provides resources and conditions comparable to the tropical forests inhabited by Gigantopithecus blacki.
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This document summarizes some of the animals that live in Antarctica. It describes fish like icefish and cod that have antifreeze to survive the cold waters. Several types of whales like blue whales and killer whales feed on krill in Antarctica. Seals have thick blubber to withstand the freezing temperatures, and penguins will huddle together to survive the winter. Krill are an important food source for many Antarctic animals.
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Arctic foxes have fur that changes color with the seasons and compact bodies that minimize heat loss. They live in Arctic tundra regions and prey mostly on lemmings. Arctic foxes are endangered due to hunting for their fur and competition from red foxes. Conservation efforts include laws protecting Arctic foxes and reducing greenhouse gas emissions. Arctic foxes typically mate for life and have litters of 5-9 pups that both parents help raise.
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Training
Major Bill Bligh, Director of the Army War College’s new six-month attaché training program,
is concerned about how the 20 officers taking the course spend their time while in his charge.
Major Bligh recognizes that there are 168 hours per week and thinks his students have been
using them rather inefficiently.
Bligh lets:
X1 = number of hours of sleep needed per week
X2 = number of personal hours
X3 = number of hours of class and studying
X4 = number of hours of social time off base
He thinks that students should study 30 hours a week to have time to absorb the material. This is
his most important goal. Bligh feels that students need at most 7 hours of sleep per night on
average and that this goal is number 2. He believes that goal number 3 is to provide at least 20
hours per week of social time.
Formulate this goal programming problem
Solve with the software (lindo or excel) of your choice.
Solution
Total hours x= 168 hours è 7days
X = 1 week = 168 hours = 7 days + 7 nights
X1 = number of hours of sleep needed per week
Based on goal number 2 students need at most 7 hours of sleep per night on average
So,
X1=7*7 = 49 Hours per week
X3 = number of hours of class and studying
30 hours a week to have time to absorb the material
X3 = 30 hours per week
X4 = number of hours of social time off base
that goal number 3 is to provide at least 20 hours per week of social time.
X4 = 20 hours per week
X2 = number of personal hours
69
X1+X2+ X1+X2 = X
X=168
X1=49
X2=?
X3=30
X4=20
X2 = x-(X1+X2+X3)
X2 = 168-(49+30+20);
X2 = 168-99;
X2 = 99
MAX 2 X4 + S5
ST
X1 + S1 = 168
S1- 0.5 X1 - X2 - S2 = 0
2 X1 + S2 - 0.5 X2 - X3 - S3 = 0
2 X2 + S3 - 0.5 X3 - X4 - S4 = 0
2 X3 + S4 - 0.5 X4 - S5 = 0
END.
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What are three types of Why are fossils important to scientists.pdf
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