| A | B |
|---|
| pond | a fresh water habitat in which the water stays in one place |
| stream | a fresh water habitat with moving water |
| ocean | a large, deep body of salt water |
| food web | a group of several food chains that are connected |
| pollution | waste that harms land, water, or air |
| recycle | use waste to make new things that can be used again |
| oxygen | What do tree leaves give off that helps us breathe? |
| landfills | Trash goes in to big pits in the ground called ____. |
| plankton | Tiny animals that are food for many ocean animals. |
