| A | B |
|---|
| cell fluids are mostly this compound | water |
| distance from the equator | latitude |
| high energy molecules made from photsynthesis | sugar |
| living ecosystem components | biotic factors |
| changing nitrogen gas to usable nitrogen in the soil | nitrogen fixation |
| distance above sea level | elevation |
| required for recycling matter | energy |
| the first level of the food chain | producers |
| applied to replace soil nitrogen in crop fields, lawns, and gardens | fertilizers |
| average weather over time | climate |
