MCQOPTIONS
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| 1. |
Which of the following are ecological services? |
| A. | O2 fixation, CO2 release, and pollution |
| B. | Nitrogen fixation and pollution |
| C. | CO2 fixation, O2 release, and pollination |
| D. | CO2 fixation, fertilization, and the release of sodium |
| Answer» D. CO2 fixation, fertilization, and the release of sodium | |