Impacts on our Environment Part two

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.

How might cutting down the trees in a rainforest

environment affect the animals that live there?

• All of the animals that live there will perish rapidly.

• Animals will move to new areas to meet

  their needs.

• The animals will make their homes

  under ground.

• Animals that eat tree leaves

  will become carnivores.

A wildfire destroys a large number of pine trees in a forest. The pine trees will naturally grow back after the fire, but it will take many years. A local conservation group wants to help the forest grow back more quickly.

Which of these would likely be part of the conservation group's plan?

• building homes in places where the forest used to grow

• finding new homes for the animals that used to live in the forest

• planting pine tree seedlings in different places in the forest

• removing any remaining pine trees and using them for lumber

Cities are often hotter than their surrounding areas because roads and buildings can absorb more heat from the Sun than grass and trees can absorb. The hotter temperatures can harm animals and plants. How can cities help to solve this problem?

• by moving plants and trees out of the city

• by planting more trees

• by moving more people and animals into the city

• by building taller buildings

Levees are walls that hold back water. They keep water from flooding onto land. In areas that flood often, a levee makes the environment very different. This changes the kinds of plants and animals in the area. Some will not survive as well.

A city wants to build something that protects people from floods but does not affect the environment. They ask many people for ideas. Then, they bring everyone together to talk about each idea. Why is talking about the ideas helpful?

• Talking to people makes floods happen less often.

• Sharing everyone's ideas helps to improve the design.

• Using everyone's ideas makes the design cost more.

• Having more ideas makes it harder to choose a design.

Which of the following gives an example of how birds change their environment to meet their needs?

• Birds use twigs to build a nest.

• Birds hatch eggs and feed their young.

• Birds breathe air and drink water.

• Birds find food.

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

• food.

• shelter.

• water.

• all of the above

When an environment changes and organisms can no

longer meet their basic needs they will most likely −

• thrive.

• perish (die).

• not be affected.

• none of the above

Which is NOT a way humans can change the environment?

• flooding a river

• building factories that pollute the air

• spilling oil in the ocean

• cutting down trees

Renewable resource is ____________.

• a resource that cannot be replaced.

• a resource that can be replaced.