Chapter 4 Review

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Chapter 4 Review

• Science Test Questions

2
Why do chipmunks in the Great Smoky Mountains
survive?

• Their needs are met in that environment.
• They have driven out all the other chipmunks.
• Humans feed them, which helps them survive.

3
Why do chipmunks in the Great Smoky Mountains
survive?

• Their needs are met in that environment.
• They have driven out all the other chipmunks.
• Humans feed them, which helps them survive.

4
Nonliving things that affect organisms in an
ecosystem include soil, temperature, and

• water.
• plants
• parasites.

5
Nonliving things that affect organisms in an
ecosystem include soil, temperature, and

• water.
• plants
• parasites.

6
Which describes a balanced ecosystem?

• There is enough food for people to exist.
• One type of animal and plant depend on each
  other.
• No animal or plant drives out other animals or
  plants.

7
Which describes a balanced ecosystem?

• There is enough food for people to exist.
• One type of animal and plant depend on each
  other.
• No animal or plant drives out other animals or
  plants.

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• A species whose population has been reduced to
  such small numbers that it is in danger of
  becoming extinct.

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Endangered

• A species whose population has been reduced to
  such small numbers that it is in danger of
  becoming extinct.

10
Suppose you found a rock that had imprints of
water plants and shells. What does this tell you
about the area in which you found the rock?

• It was once under water.
• It was once a forest.
• Dinosaurs once lived there.

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Suppose you found a rock that had imprints of
water plants and shells. What does this tell you
about the area in which you found the rock?

• It was once under water.
• It was once a forest.
• Dinosaurs once lived there.

12
A meadow has too many rabbits. What would help
balance this ecosystem?

• more rain that grass needs
• more foxes that eat rabbits
• fewer foxes that eat rabbits

13
A meadow has too many rabbits. What would help
balance this ecosystem?

• more rain that grass needs
• more foxes that eat rabbits
• fewer foxes that eat rabbits

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• No longer living, as an entire species, or no
  longer active, as a volcano.

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extinct

• No longer living, as an entire species, or no
  longer active, as a volcano.

16
Look carefully at the pictures below. How do
these organisms interactions help balance their
ecosystem?

• Rabbits make homes in grass.
• Grass and rabbits both need oxygen.
• Grass makes oxygen, and animals use it.

17
Look carefully at the pictures below. How do
these organisms interactions help balance their
ecosystem?

• Rabbits make homes in grass.
• Grass and rabbits both need oxygen.
• Grass makes oxygen, and animals use it.

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How would an ecosystem change if the rabbits that
were the main prey for foxes became sick and died?

• The foxes would find new prey.
• The number of foxes would increase.
• The number of foxes would decrease.

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How would an ecosystem change if the rabbits that
were the main prey for foxes became sick and died?

• The foxes would find new prey.
• The number of foxes would increase.
• The number of foxes would decrease.

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• Gradual change from one community of organisms to
  another.

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succession

• Gradual change from one community of organisms to
  another.

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What impact does a parasite have in an ecosystem?

• helps the entire ecosystem
• hurts one organism and helps another
• helps both the host organism and parasite

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What impact does a parasite have in an ecosystem?

• helps the entire ecosystem
• hurts one organism and helps another
• helps both the host organism and parasite

24
Which would cause an ecosystem to change quickly?

• an earthquake
• a lake drying up
• a climate change

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Which would cause an ecosystem to change quickly?

• an earthquake
• a lake drying up
• a climate change

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• An organism that is harmed by a parasite.

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host

• An organism that is harmed by a parasite.

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What might be the effect on an ecosystem of a
climate change from rainy to dry?

• a change from plants to animals
• a change from a forest to marsh
• a change in kinds of plants and animals

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What might be the effect on an ecosystem of a
climate change from rainy to dry?

• a change from plants to animals
• a change from a forest to marsh
• a change in kinds of plants and animals

30
What could scientists tell from a fish fossil
found in a desert?

• Fish once had legs to travel.
• Fish once lived in dry places.
• The desert was once a sea or lake.

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What could scientists tell from a fish fossil
found in a desert?

• Fish once had legs to travel.
• Fish once lived in dry places.
• The desert was once a sea or lake.

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• An organism that lives on or in another organism,
  helping itself but hurting the other organism.

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parasite

• An organism that lives on or in another organism,
  helping itself but hurting the other organism.

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What might be a reason an animal becomes extinct?

• It is a predator.
• It produces oxygen.
• Its habitat is destroyed.

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What might be a reason an animal becomes extinct?

• It is a predator.
• It produces oxygen.
• Its habitat is destroyed.

36
How are a hawk and an owl able to succeed, even
though they compete for food?

• One hunts at night, and the other hunts during
  daytime.
• One animal moves to a different habitat.
• The owl changes its diet.

37
How are a hawk and an owl able to succeed, even
though they compete for food?

• One hunts at night, and the other hunts during
  daytime.
• One animal moves to a different habitat.
• The owl changes its diet.

38
What is one way people can disturb the balance of
ecosystems?

• Riding bicycles
• Building houses
• Planting trees

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What is one way people can disturb the balance of
ecosystems?

• Riding bicycles
• Building houses
• Planting trees

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• When two or more species in an ecosystem must use
  the same limited resources.

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competition

• When two or more species in an ecosystem must use
  the same limited resources.

42
How can damage from strip mines be repaired?

• Erosion can fill the hole.
• Mining companies can replace the soil.
• Rain can wash the rock away into rivers.

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How can damage from strip mines be repaired?

• Erosion can fill the hole.
• Mining companies can replace the soil.
• Rain can wash the rock away into rivers.

44
One result of two different species living in the
same area and using the same limited resources is

• learned behavior.
• competition.
• pollution.

45
One result of two different species living in the
same area and using the same limited resources is

• learned behavior.
• competition.
• pollution.

46
A pet-store gerbil has lived alone in a cage.
Suppose you were to put it in a cage with two
other gerbils. How can the pet-store survive in
its new environment?

• It must wait to eat until the other gerbils have
  finished.
• It must build a new home.
• It must compete with the other gerbils for
  resources.

47
A pet-store gerbil has lived alone in a cage.
Suppose you were to put it in a cage with two
other gerbils. How can the pet-store survive in
its new environment?

• It must wait to eat until the other gerbils have
  finished.
• It must build a new home.
• It must compete with the other gerbils for
  resources.

48
Why did the United States establish national
parks?

• To preserve natures beauty and habitats of
  plants and animals
• To provide Americans with great vacation spots
• To make money for the national government

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Why did the United States establish national
parks?

• To preserve natures beauty and habitats of
  plants and animals
• To provide Americans with great vacation spots
• To make money for the national government

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• Substances that are very harmful to humans and
  other organisms.

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hazardous waste

• Substances that are very harmful to humans and
  other organisms.