| A | B |
| atmosphere | Noun: The layers of gas that surround Earth |
| climate | Noun: the usual weather in a place |
| environment | Noun: surroundings and conditions that affect the growth of living things |
| contribute | Verb: to add or give; to aid in bringing about |
| policy | Noun: a rule or idea people use to make decisions and guide their actions |
| extinct | Adjective: no longer living or existing; having died out |
| pollution | Noun: anything that contaminates or dirties the environment |
| recycle | Verb: breaking down used items such as paper and cans so they can be used again |