Natural changes

When erosion wears away the land, the habitats of plants and animals __________.

• disappear

• glow

• survive

Nutrients are very helpful in plants’ growth.

• True

• False

When a pinecone opens to let its seeds out, this is considered a negative effect of fires.

• True

• False

Fires can be caused by natural events and people.

• True

• False

When there is not enough rain, ________ can hurt crops.

• drought

• lightening

• fire

Fires can have only negative effects on the ecosystem.

• True

• False

What is the result of heavy rains?

• Flood

• Fire

• drought

__________ clear space for new plant growth.

• drought

• Fire

Earth’s surface is always wearing down and breaking apart.

• True

• False