| vocabulary word |
 |
|
| definition |
 |
|
| ecosystem |
all the living and nonliving things in an area |
| population |
a group of organisms of one species that live in an area at the same time |
| community |
the group of all the populations in an area |
| niche |
the job that an organism has in an ecosystem |
| habitat |
the place in an ecosystem in which an organism lives |
| energy pyramid |
a diagram that shows the amounts of energy that flows through each level of a food chain |
| cycle |
a repeating process or flow of material through a system |