| A | B |
|---|
| environment | everything around a living thing |
| ecosystem | the living and nonliving things that affect each other in an environment form this |
| population | a group of the same kind of living things that live in the same place at the same time |
| community | all the populatons that live in an ecosystem |
| habitat | this provids a population with all its needs and includes nonliving and living things |
| forest | an area in which the main plants are trees |
| coniferous forests | These places contain mostly trees that have needle-like leaves and stay green all year. |
| deciduous forests | These places are made up mostly of trees that lose and regrow their leaves each year |
| tropical rain forests | These places are hot and wet all year. The trees grow very tall and their leaves stay green all year. |
| coastal forests | These places grow where there is a lot of rain. It is not too warm or too cold. There are many kinds of tall trees. |
| desert | an ecosystem found where there is very little rainfall |
| salt water | oceans and seas contain this |
| fresh water | lakes, rivers, ponds, streams, and some marshes contain this |
