Unit B
Chapter One
Where Living Things Are Found| environment | the things, both living and nonliving, that surround a living thing |
| ecosystem | the living and nonliving things in an environment |
| population | a group of the same kind of living thing that all live in one place at the same time |
| community | all the populations of organisms that live in an ecosystem |
| habitat | the place where a population lives in an ecosystem |
| forest | an area in which the main plants are trees |
| deciduous forest | a forest in which most trees lose and regrow their leaves each year |
| tropical rain forest | a hot, wet forest where the trees grow very tall and their leaves stay green all year |
| coastal forest | a thick forest with tall trees that gets a lot of rain and does not get very warm or cold |
| coniferous forest | a forest in which most of the trees are conifers ( cone-bearing) and stay green all year |
| desert | an ecosystem where there is very little rain |
| grassland | an ecosystem made up of large, flat areas of land that are covered with grass |
| salt water | water that has a lot of salt in it |
| fresh water | water that has very little salt in it |