Science Snapshot 3 Review

What do people, horses, and seahorses have in common?

• They are producers.

• They share the same habitat.

• They are dependent on other organisms for food.

• They decompose dead or decaying organisms.

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What do lions, tigers, and bears have in common?

• They are producers.

• They share the same habitat.

• They are dependent on other organisms for food.

• They decompose dead or decaying organisms.

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What do penguins, giraffes, and owls have in common?

• They are producers.

• They share the same habitat.

• They are dependent on other organisms for food.

• They decompose dead or decaying organisms.

If all of the deer are removed from this food web because of a forest fire, which animal

population will most likely decrease first?

• mouse

• bees

• snake

• mountain lion

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If all of the rhinos are removed from this food web because of a drought, which animal

population will most likely decrease first?

• lions

• giraffes

• snakes

• foxes

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If all of the rabbits are removed from this food web because of a drought, which animal

population will most likely decrease first?

• mice

• owl

• fox

• snake

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If all of the mussels are removed from this food web because of an oil spill, which animal

population will most likely decrease first?

• starfish

• shark

• humans

• fish

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Hyenas live in the wild grassy plains in Africa. They hunt many animals, including

rabbits. Rabbits eat grasses. How might moving hyenas to zoos and wildlife parks

affect the grasses in Africa?

• More grasses would grow because there are fewer hyenas.

• There would be fewer grasses because there would be more rabbits.

• There would be fewer rabbits because there would be fewer hyenas.

• The grass would be healthier and greener.

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Snakes live around freshwater all across the United States. They hunt many animals, including frogs. Frogs eat dragonflies. How might killing snakes across the United States affect the dragonfly population?

• More dragonflies would grow because there are more snakes.

• There would be fewer dragonflies because there would be more frogs.

• There would be fewer frogs because there would be fewer snakes.

• The dragonflies be healthier and more colorful.

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Bears live in the forest. They hunt many animals, including

deer. Deer eat mushrooms. How might moving bears to zoos and wildlife parks

affect the mushrooms in forests?

• Less mushrooms would grow because there are fewer bears.

• There would be fewer mushrooms because there would be more deer.

• There would be fewer deer because there would be fewer bears.

• The mushrooms would be healthier and larger.

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