Ecology Concepts

Front

10% Rule

Back

Each trophic level can only give 10% of its energy to the next level.

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Autotrophs

Back

Organisms that make food for themselves using light energy, carbon dioxide, and water.

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Biosphere

Back

The part of the Earth that can support life; includes all living things and the places they are found.

Front

Energy pyramid

Back

A model that shows how the energy available to organisms at each trophic (feeding) level of an ecosystem is decreased.

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Heterotrophs

Back

Organisms that eat other organisms for food.

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Nutrients

Back

A substance that provides nourishment essential for growth and the maintenance of life.

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Primary consumer

Back

Organisms that eat only plants.

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Secondary consumer

Back

Organisms that eat primary consumers.

Front

Tertiary consumers

Back

Organisms that eat secondary consumers.

Front

Trophic levels

Back

The feeding position of different groups of organisms within all food chains in the biosphere.