Ecology Unit Review

Front

What does a decrease in salmon population due to an increase in river temperature indicate?

Back

An abiotic factor affecting a biotic factor.

Front

Why does secondary succession generally occur more rapidly than primary succession?

Back

Soil formation has already occurred.

Front

What is an abiotic factor?

Back

A non-living component of an ecosystem, such as an ocean current of cold water.

Front

What is mutualism?

Back

A symbiotic relationship in which both organisms benefit.

Front

Give an example of mutualism.

Back

A fish protecting a shrimp, who builds a burrow for the pair to share.

Front

What is primary succession?

Back

The process of ecological change that occurs in an area where no soil exists.

Front

What is secondary succession?

Back

The process of ecological change that occurs in an area where soil is present but has been disturbed.

Front

Define biotic factors.

Back

Living components of an ecosystem, such as plants, animals, and microorganisms.

Front

What is an example of a biotic factor?

Back

A polar bear on an ice floe.

Front

What is the role of pioneer species in succession?

Back

Pioneer species are the first organisms to colonize a barren environment, initiating the process of ecological succession.