Topic 11: Ecosystem

Front

producers

Back

Organisms that use sunlight to make their own food through the process of photosynthesis.

Front

consumers

Back

Organisms that cannot make their own food and obtain energy by feeding on other organisms.

Front

decomposers

Back

Organisms that get their energy by breaking down organic wastes or dead organisms, returning raw materials to the soil and water.

Front

trophic level

Back

A feeding level in an ecosystem.

Front

energy pyramid

Back

A diagram that shows the amount of energy that moves from one trophic level to another in a food web.

Front

nutrients

Back

Substances that an organism needs to carry out its life processes.

Front

element

Back

A substance that cannot ordinarily be separated into simpler substances.