Which of the following shows the flow of energy through a food chain?

• Sun < grass < jackrabbit < coyote

• grass > polar bear > fish > rabbit

• alligator < fish < fly < frog

• acorn > squirrel > snake > owl

Eagles nest high in dead trees. All of the dead trees in an area are knocked down during a flash flood. Why does the number of eagles in the area decrease?

• the eagles start nesting in live trees instead of dead trees

• the eagles no longer have a good place to build nests

• the eagles have more materials with which to build nests

• the eagles start nesting on the ground instead of in dead trees

A fire caused by lightening destroyed the forest shown above in this picture. What will most likely happen to the birds that lived in this forest?

• they will fly to another forest or die

• they will change the type of shelter they use

• they will change what they normally eat

• they will adapt by living on the ground

Use the food chain below to answer the question.

Sun > Grass plants > crickets > Frogs > Snakes

If the population of snakes increases, the population of frogs will most likely

• decrease

• increase

• remain the same

• double

Which of the following environments could support both a herd of deer and population of owls?

• Wetlands

• Artic

• Desert

• Forest

Some watermelon plants are planted in a sunny part of the garden and some in the shade of a tree. All the plants are in the same type of soil and get plenty of water. Which watermelon plants will probably grow better?

• They will all grow equally well

• The plants in the shade because they will stay drier on wet days

• The plants in the Sun will grow better because they will get more light

• It depends on what kinds of soil is in the garden

In Which environment would a white rabbit be best protected from predators?

• A shady forest

• A snowy field

• A grassy lawn

• A muddy riverbank

The picture above shows a lodge in a river ecosystem where beavers live. Why is a river ecosystem the best environment for a population of beavers?

• Beavers feed on aquatic plants

• Beavers build dams for shelter

• Beavers move easily through the river water using their webbed feet

• All of the above

A scientist studied a population of deer in an area. One year later, half of the deer population had moved to another area. Identify and explain two factors that might have caused the deer to move.

• Deer may move to another area after a fire because their shelter is destroyed and there is a lack of food to survive

• Deer may move to another area during a drought to seek food and water

• Deer may move to another area as sever weather may have caused damage to their shelters

• All of the above are possible answers

Which of the following could not survive in a forest ecosystem?

• Moss

• Cactus

• Shrubs

• Ferns