Science Benchmark 1 Review

Food gives us ___________

• energy

• oxygen

• sunlight

• carbon dioxide

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Living things that make their own food using energy from the sun, like green plants and algae, are called ___________________.

• consumers

• prey

• producers

• predators

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The food of almost every living thing begins with __________

• sunlight

• meat

• water

• vegetables

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Algae that live in the ocean are important because __________.

• A. as part of plankton, they are food for many different living things.

• they make oxygen for us to breathe

• algae are food for tiny little floating animals

• all of the above

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Animals that eat both plants and animals are called _________________.

• carnivores

• omnivores

• decomposers

• herbivores

Animals that cannot make their own food are called __________________.

• decomposers

• herbivores

• omnivores

• consumers

Primary consumers are always _____________________.

• carnivores

• producers

• herbivores

• omnivores

What percentage of energy would the snake get from eating the frog?

• 100%

• 10%

• C. 1%

• 0.1%

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In the food chain pictured, how would the community of organisms most likely change if the grasshoppers were removed or died out?

• A. The snake population would increase.

• The frog population would increase.

• The grass population would decrease.

• The hawk population would decrease.

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The role of decomposers in the food chain is to _____________.

• A. consume plants and animals

• produce food using energy from the sun

• eat decaying matter and return nutrients to the soil

• hunt and eat prey

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