3.1 Living Things Change Their Environment

___________________ things make changes to their environments.

• Living

• Dead

• Tall

• Hard

Plants and animals ____________________ with one another to get what they need to survive.

• conceit

• comute

• compete

• concrete

Environments can change as living things compete to meet their _____________________.

• wants

• needs

• wishes

• desires

Beavers change their environment by by using their strong ___________________ to cut down __________________.

• feet, weeds

• tails, plants

• teeth, trees

• noses, shrubs

When beavers build dams, they stop the ___________________ from flowing and makes a(n) __________________ or pond. Choose the two that apply.

• water

• lava

• ocean

• pool

Beaver dams can make ____________________ flood with water.

• wet land

• dry land

• desert

• tundra

What makes more changes to Earth's environment than any other living thing?

• Gorillas

• Humans

• Weeds

• Dogs

People make a lot of ___________________, which can get into the environment.

• buildings

• roads

• trash

• houses

How much trash in the United States is recycled?

• 3/10

• 1/10

• 6/10

• 4/10

Why should people practice the "3 Rs"?

• to be better than everyone else

• to fit in

• just because

• to help keep the environment healthy