Interactions in Ecosystems

A forest is home to blue jays, rabbits, and foxes. The blue jays eat mostly acorns, seeds, insects, and fruit. The rabbits eat grass and bark. The foxes eat fruit, bird eggs, frogs, mice, rabbits, and birds. If the fox population suddenly got smaller, what would likely happen to the blue jay population?

• It would remain the same

• It would also get smaller

• It would get larger

• It would disappear

Tags

ecosystems

Which organisms are producers in a food chain?

• plants

• air

• sunlight

• water

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Which organisms are consumers in a food chain)?

• herbivore

• plants

• carnivore

• omnivore

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Animals get energy from other _________.

• home

• organisms

• stores

• plants and animals

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Some farmland was recently developed into a neighborhood of houses. A coyote was found on the street near the houses. The reason this animal appeared on the street was most likely because it _________________.

• became the pet of a neighborhood homeowner

• preferred the neighborhood instead of farmland

• lost its natural habitat on the farmland

• escaped from its habitat at the local zoo

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All the living and nonliving things in an area interacting with each other is a(n)

• abiotic

• ecology

• environment

• ecosystem

Which factor would most likely wipe out a population of eagles in the forest?

• higher rainfall than normal

• a great increase in the rabbit population

• extreme windstorms in the desert

• disease wipes out all rodents

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All of the following could limit the growth of a population except which factor?

• harsh winter

• increased predator population

• lack of rain

• plentiful food sources

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If conditions are favorable, a population of rabbits will continue to grow and increase. What could limit the growth of a population of rabbits?

• a decrease in the number of foxes

• a drought

• a mild winter

• an abundance of green, leafy plants

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Extinction of various plants is a threat to humans mainly because of ____.

• the loss of shade and protection from the sun

• the loss of food and medicine

• the loss of money for farmers

• the loss of erosion prevention

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