Matter and Energy Flow Vocab Flashcard

Front

Denitrification

Back

Reduction of nitrates to atmospheric nitrogen N2.

Front

Nitrogen Fixation

Back

Turning atmospheric nitrogen N2 into a usable form for plants.

Front

Nitrogen cycle:

Back

Exchange of nitrogen between living things and the environment.

Front

Limiting factor:

Back

An abiotic or biotic requirement for an organism that is limited in the ecosystem, controlling population size.

Front

Reservoir: A large supply, e.g., fossil fuels and atmosphere for carbon.

Back

A large supply, e.g., fossil fuels and atmosphere for carbon.

Front

Example of terrestrial biota?

Back

A penguin

Front

Decomposer

Back

An organism that breaks down dead material and returns nutrients to the soil.

Front

Identify a food web.

Back

Each organism may have multiple arrows in it.

Front

Example of a trophic level?

Back

Primary consumer

Front

Energy left at tertiary consumer from 100% start?

Back

0.1%