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4th Grade 3rd Quarter

Test Description: A review for the 3rd quarter common assessment, covering ecosystems, food chains and webs, and

Instructions: Answer all questions to get your test result.

1) Explain why animals hibernate in the winter.

ATo conserve energy BTo escape the cold CBoth to conserve energy and because there is a lack of food in winter. DThere is a lack of food in winter.

2) What do you think would change an ecosystem the least?

AOne organism dying out of the ecosystem BA forest fire CA plant disease DA hunting season

3) In an ocean, how could humans harm an ecosystem?

AAll of the answers BOver fishing CDumping toxic chemicals DOil spill

4) What does an herbivore eat?

AJust animals BNeiter plants or animals CPlants and animals DJust plants

5) What do a carnivore and an omnivore have in common?

AThey both eat plants. BThey both eat meat and plants. CThey both eat meat. DNeither eats plants.

6) Why do animals migrate?

ATo find a job BTo escape a predator CTo find food DTo escape the cold

7) Explain why a polar bear can survive in the arctic, but not in the desert

AFor camouflage in the arctic, and to survive the cold weather. BIt's fur doesn't camoflage with the desert environment, but it does in the arctic. CIt's fur makes the desert too warm of a climate, but just right in the arctic. DIt's too big for the desert.

8) What is a food web?

AA spider\'s home BA group of similar animals CA group of ecosystems DA set of linked food chains

9) What is the source of energy for all living things?

AThe Earth's core BA battery CThe sun DA tree

10) What structural parts help a bird to survive?

ABeak BA small stomach CWings DBeak and Wings

*select an answer for all questions

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