Environmental Changes 1

Which is one negative effect of fires?

• Fires clear space for new plants growth

• Pinecones open to let their seeds out

• Fires destroy trees and other plants as well as animal habitats

Is when small pieces of rock are carried away by water and sometimes by wind.

• flood

• erosion

• drought

It occurs when it does not rain for a long time. It forces people and animals to look for new places to live.

• fires

• flood

• drought

How do beavers change the environment?

• they build mounds

• they release poison

• they build dams

Plants change the environment by __________________

• taking space in an area making it harder for other plants to survive

• needing water

• going through photosyntesis

Is a large amount of water that covers normally dry land:

• flood

• fire

• erosion

It causes rivers to rise higher and higher:

• erosion

• drought

• flood

They caus flame, heat, smoke, and ash, as a result they can change ecosystems:

• erosion

• fire

• flood

One positive effect of _________ is that some pinecones only open after being heated.

• fires

• erosion

• drought

Where there is not enough rain, _____________ can hurt crops.

• drought

• flood

• erosion