Changes to the Environment

A beaver dam causes the water to ________ the plants and animals downstream.

• flood

• not reach

• pollute

• trap

When humans dig mines, it can cause ________ to form.

• habitats

• sink holes

• plants

• wild fires

__________________benefits plants by removing dead and decaying plants and burns off some of the plants so that sunlight can reach the forest floor.

• A wildfire

• A landslide

• A drought

• A flood

In an aquatic environment, sometimes there is a __________ that allows the water to dry up. New plants are able to grow and different animals are able to move in.

• wildfire

• flood

• drought

• landslide

____________ can carry and deposit nutrients that enrich the soil.

• wildfire

• flood

• drought

• landslide

When dry land becomes covered with water. Ecosystems on land are often destroyed and the animals struggle to meet basic needs. What is this called?

• flood

• drought

• pollution

• wildfire

When animals overgraze the land, it can be eroded by wind and water. The animals pollute streams and other water sources with their droppings (poop).

• True

• False

When an earthquake occurs when there is sudden rolling or shaking events by movement under the earth's surface. It WILL NOT trigger landslides, which can destroy plants and animals habitats.

• True

• False