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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.

AThere is a lack of food in winter. BBoth to conserve energy and because there is a lack of food in winter. CTo conserve energy DTo escape the cold

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

AA plant disease BA hunting season COne organism dying out of the ecosystem DA forest fire

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

AAll of the answers BOil spill CDumping toxic chemicals DOver fishing

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 meat and plants. BThey both eat meat. CNeither eats plants. DThey both eat plants.

6) Why do animals migrate?

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

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

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

AA battery BThe sun CA tree DThe Earth's core

10) What structural parts help a bird to survive?

AWings BBeak and Wings CA small stomach DBeak

*select an answer for all questions

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