1. According to William Cline, global agriculture could fall by the end of the century by
| A. |
| B. |
| C. |
| D. |
2. Which countries does Cline believe will suffer less loss of capacity than many developing countries
| A. |
| B. |
| C. |
| D. |
3. The net impact of increased atmospheric carbon and global warming is likely to be
| A. |
| B. |
| C. |
| D. |
4. Agriculture contributes what percentage to increased atmospheric carbon?
| A. |
| B. |
| C. |
| D. |