| A | B |
| What % pollution in the marine environment comes from land-based sources ? | 80% |
| What are some land based sources? | cars |
| What forms when where 2 air masses meet? | front. |
| A gas that increases the Greenhouse effect? | carbon dioxiode. |
| What is the most important sense to marine mammals? | hearing. |
| What is formed when water condenses and falls as what? | Precipitation. |
| How many species do scientist think are in the ocean? | 300 to 500 million. |
| What is the temperature at which condensation occurs called? | dewpoint. |
| What is the line on a weather map that indicates point of equal pressure called? | Isobar--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------A isobar does. |
| What is a swirling twisting wind that forms over land ? | tornado. |
| What is a violent wind storm that is located over water? | hurricane. |