a living being, such as a human, that eats other living beings in order to survive

the process by which the body of a living thing is broken down by decomposers

one particular area where several kinds of organisms interact with each other

an organism that breathes in oxygen and then breathes out carbon dioxide

This passage explains what the difference between plants and fungi is.

This passage explains what an ecosystem is and how it works.

This passage explains how oxygen is used by the human body after it is breathed in.

This passage explains what happens when a decomposer dies in the forest.

Plants use sunlight, water, and carbon dioxide in a process called photosynthesis.

Forest ecosystems cover about a quarter, or one-fourth, of the total land surface in the world.

Producers are living things that can make their own energy out of non-living resources.

A deer decomposing in the soil provides food for bacteria and nutrients for plants to grow.