Living things have many different needs. Birds need twigs to build a nest, fish need water to survive, your pet hamster needs a clean cage, and plants need sunlight to make food. All around us, living things are using their environment to fill these needs. | ![]() |
Living things often use other living things to satisfy needs, such as in the example of a lion, who uses his prey as food, or the bacteria in your body, which uses you as shelter. Other times, living things use non-living things to fulfill their needs. This might be the lizard who uses a crack in a cliff side to hide, or plants who use minerals from the soil to create food.

The Beaver Uses His Environment To Build A Dam.