Using energy from sunlight to power chemical reactions

Using chemical energy to produce carbohydrates

Organisms that rely on other organisms for their energy

Obtain energy by eating plants

Obtain energy by eating animals

Obtain by eating both plants and animals

Obtain energy by eating the remains of dead plants and animals

Organisms that break down organic matter

A series of steps in which organisms transfer energy by eating and being eaten

A network of complex interactions between organisms

Each step in a food chain or food web

A diagram that shows the relative amounts of energy or matter in each trophic level

The total amount of living tissue within a tropic level