Environmental Changes

A park is home to a large number of robins, squirrels and rabbits. The robins and squirrels live in the park’s trees. The robins feed on earthworms and insects that live on the ground. The squirrels eat the acorns produced by the park’s oak trees. The rabbits hide in the bushes and feed on the grass. Which factor would negatively impact the number of rabbits living in the park?

• Collecting acorns off the ground.

• Planting more trees.

• Removing park bushes.

• Removing the squirrels.

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If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?

• The bird population would stay the same

• The bird population would increase fast

• The bird population would decrease

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The nesting habits of four types of birds are above. If all the dead branches and dying trees in a wooded area are removed, which bird's nesting habit would be most affected?

• Baltimore Oriole

• Barn Swallow

• Downy Woodpecker

• Belted kingfisher

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Which of the following would most likely result in a decrease in the population of insect-eating birds that build their nest on trees?

• Overhunting of animals that prey on birds

• Observation of birds by scientist

• Introduction of a new type of insect

• Clearing of forests to build a highway

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too many of the same organism in one area

• native species

• overpopulation

• invasive species

• restore (restoration)

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Changes to an environment may make it more difficult for an organism to find-

• food.

• shelter.

• water.

• all of the above

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When an environment changes and organisms can no

longer meet their basic needs they will most likely −

• thrive.

• perish.

• not be affected.

• none of the above

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If all of the water dries up in a pond, the fish will-

• move into a new pond.

• swim faster.

• thrive.

• perish.

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A fire destroys all of the trees and plants in the forest. How might this affect the birds in the area?

• The birds will plant seeds and grow new trees.

• The birds will have more food to eat.

• The birds will plant seeds and grow new trees.

• The birds will have no place to build their homes.

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Very little rainfall, hot weather, and cracked ground

describe which change to an environment?

• volcanic erruption

• landslide

• drought

• flood