Ecosystems and Animal Adaptations

What is one consequence of wetland destruction?

• a decrease in wildlife habitat

• a decrease in invasive species

• an introduction of new plant life

• an introduction of a new bird species

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Which is an example of an organism benefiting from changes in the environment?

• white arctic rabbits are more visible to predators because of warmer temperatures

• an extreme cold temperature freezes the eggs of insects and decreases the population

• an increase in national park lands gives species a larger habitat

• global climate change raises ocean temperature and decreases the jellyfish population.

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Below is a food Chain:

grasses - crickets - mice - snakes - hawks

Which population would most likely increase if the number of mice decreases?

• hawk

• snake

• cricket

• grasses

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Sometimes the National Park Service sets controlled fires in certain areas. Why is this most likely beneficial to a national park?

• because it eliminates non-native plant species

• because it allows more animals to migrate into the park

• because most animals need more open land to find enough food

• because some plants need fire to release their seeds for germination

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What will a zebra population most likely do if a very dry season with little rainfall kills most of the grass?

• the zebra population will change its diet

• the zebra population will travel in search of grass

• the zebra population will produce more offspring

• the zebra population will grow because it has more space

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Which is one way most animals protect themselves from predators?

• by blending in with thier surroundings

• by searching for food and water

• by sleeping for several months

• by attracting mates

Which explains why some whales migrate?

• to avoid predators

• to locate food and to mate

• to gain and protect a territory

• to communicate with one another

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Some large animals hibernate in the winter when it is cold and there is a lot of snow. Why do some animals hibernate?

• because they become sleepy and want to rest

• because food becomes scarce and they must save energy

• because they do no like to get their paws wet and want to keep them dry

• because their habitat is normally warm and the cold bothers them

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Which behavior would a lizard use to survive in the desert?

• looking for water to swim in

• burying itself in the cooler sand below

• hunting for food midday when the sun is hottest

• hiding under the leaves of a tree to avoid the sun's heat

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Which behavior is least likely to help an animal survive in the winter months?

• a beaver builds a lodge and stays inside more during the coldest part of the winter

• a penguin stands very close to other penguins during the coldest part of the winter

• a mouse gathers and stores extra seeds when the weather starts to get cold

• a squirrel produces a litter of eight baby squirrels when the weather starts to get cold