7th Grade Science: Unit 09 Flashcards

Front

What is the 10% rule?

Back

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

Front

Autotrophs

Back

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

Front

What is the biosphere?

Back

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

Front

What is an energy pyramid?

Back

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

Front

What are heterotrophs?

Back

Organisms that eat other organisms for food

Front

Nutrients

Back

Substances that provide nourishment essential for growth and the maintenance of life

Front

What is a primary consumer?

Back

Organisms that eat only plants

Front

What is a 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