| A | B |
|---|
| How do humans get nitrogen? | We eat it in plants and animals |
| How do plants get nitrogen? | They get the FIXED nitrogen from the soil. It is fixed by the bacteria |
| How does bacteria help the nitrogen cycle? | It turns free nitrogen into amonia and the bacteria in the nodules of bean plants (legumes) fixate the nitrogen so plants can use it |
| Where are nodules? | On the roots of bean plants (legumes- type of plant) |
| What are legumes? | bean, peanut and clover plants. They have nodules on their roots that hold nitrogen fixing bacteria |
| What percent of the air is free nitrogen? | 78% |
| Can free nitrogen be ueds by plants? | No. it must be fixed nitrogen... It is fixed by bacteria |
| How does nitrogen get into the soil? | Dead animals, plants, animal waste |
| Does bacteria help this cycle? | YES |
| What happens if there is too much nitrogen in the soil | Plants overgrow. Like too much fertilizer. |
| Where can you find nitrogen | Air, water, fertilizers, plants, animals, dead animals, animal waste, --- all the areas in the room we visited when we were Traveling Nitrogen Atoms. |
| What powers the nitrogen cycle? | Decomposers--- bacteria, which is powered by the food it breaks down which comes from animals and plants which comes from the sun. |
| What materials do not cycle? | NONE :) |
| Doesn energy cycle? | NOPE!!!!! |
| Do atoms cycle? | YES! |
