Ecosystems

Humans are part of the ecosystem and therefore impact it. Which of the following events in an ecosystem may produce a negative effect?

• Preventing deer from depleting food resources.

• Restoring a natural habitat.

• Wildlife rangers minimizing disturbances.

• A lumber company clearing a forest.

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NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A highway is built through a forest. This will most likely have which of the following effects on the organisms in the area?

• Increase the number of bird species in the forest

• Raise the birth rate of the animals on the forest floor

• Eliminate all species of plants found in the forest

• Make it difficult for animals to move through the forest

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NGSS.MS-LS2-4

NGSS.MS-LS2-5

Alligators are the large predators that eat many of the smaller animals in a swamp. How might removing the alligators from a swamp habitat create a decrease in vegetation?

• Meat-eating animals would begin eating plants.

• The plants in the swamp would get more sunlight.

• More plant-eating animals would survive.

• Plants would not be able to spread their seeds.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

If humans over-hunted a population of insect-eating birds, what immediate change would likely be seen in the area?

• Increased seedling germination

• Increased populations of insects

• Migration of small mammals

• Severe loss of vegetation

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

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

• more rain that grass needs

• fewer foxes that eat rabbits

• more foxes that eat rabbits

• more grass for the rabbits to eat

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

If humans cleared a forest and built homes where the forest once was, we would expect which of the following?

• More development of soil

• Fewer tree-dwelling animals

• More frequent thunderstorms

• Increased insect population

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

a HABITAT is:

• a type of animal.

• a place where plants and animals live.

• a big house for humans.

The HABITAT gives living things:

• water and a house

• food and space

• food, water and shelter

• Friends and family

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NGSS.MS-LS2-4

Overgrazing is when

• animals begin to hunt for their own food.

• animals begin to eat all the producers around.

• animals hibernate for the winter.

• animals interact with living and non-living things.

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What are the negative effects of building a highway near a forest? (Select ALL that apply)

• Animals lose their homes.

• Animals can get harmed by traffic.

• Animals have more space to live.

• Animals need to move away to find a home.

• Animals population will decrease in that area.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4