| A | B |
|---|
| watershed | region or ares bounded by a divide and draining a particular water course or bodu of water |
| groundwater | a source of drinking water that travels underground |
| fertilizers and pestisids | chemicals used to kill insects or bugs |
| percent of the earth that is fresh water | 3% |
| percent of the earth that is water | 75% |
| high PH level | basic |
| low PH level | acic |
| medium PH level | nuetral |
| esker | a long narrow ridge or mound of sand, gravel and boulders deposited by a stream flowing on, within or beneath a non-moving glacier |
| decidious | trees that loose their leaves |
| evergreen | trees that have leaves that stay green all year long |
