| A | B |
|---|
| matter | recycled in ecosystem |
| evaporation | water goes from liquid to gas |
| transpiration | water evaporating from leaves of plants |
| clouds | condensation causes these |
| proteins | nitrogen is necessary to make these |
| nitrogen fixation | converting N gas to a usable form |
| limiting nutrient | single nutrient that is scarce or cycles very slowly |
| algal bloom | increase in amount of algae |
| carbon dioxide | carbon is found in the atmosphere in the form of this |
| nitrogen fixing bacteria | organisms that can convert nitrogen in the atmosphere into a form useful to living things |
| phosphorus | This nutrient is needed to make DNA & RNA |
| denitrification | Converting nitrates back into nitrogen gas |
