Chapter 5 - How Ecosystems Work

Front

How do animals get nitrogen?

Back

Animals get nitrogen by eating other organisms.

Front

When you consume an organism, how much of the toxins do you receive?

Back

You receive all of the toxins.

Front

What percentage of energy is passed on to each trophic level?

Back

10% of energy is passed on to each trophic level.

Front

Where do all life forms get their energy?

Back

All life forms get their energy from the Sun.

Front

What is formed during primary succession that doesn't need to be formed during secondary succession?

Back

Soil is formed during primary succession.

Front

What are pioneer species?

Back

Pioneer species are the first organisms to colonize a barren environment.

Front

What is a climax community?

Back

A climax community is a stable and mature ecological community that has reached equilibrium.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

Front

What is the difference between primary and secondary succession?

Back

Primary succession occurs in lifeless areas, while secondary succession occurs in areas where a disturbance has destroyed an existing community.

Front

What is a food chain?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.