Maintaining Biodiversity

Front

_____ are models that illustrate the energy flow between organisms in an ecosystem.

Back

Food webs

Front

Maintaining ________ is important to keep an ecosystem healthy.

Back

biodiversity

Front

______ are organisms that can be used as warning signals for changes in an ecosystem.

Back

Bioindicators

Front

_____ are scientists who study human impacts on ecosystems.

Back

Conservation biologists

Front

Something that worsens the quality of air, water, or soil is called a ______.

Back

pollutant

Front

________ species are important to ecosystems and many ecosystems would collapse without them.

Back

Keystone

Front

Community of interacting organisms and their environment

Back

Ecosystem

Front

What are a keystone species found in tide pools?

Back

Sea stars

Front

An organism is ______ when there are no more left on Earth.

Back

extinct

Front

_______ are protected lands in the United States that preserve ecosystem and biodiversity.

Back

National parks