Nitrogen

1. The three chemicals that are needed for plants to survive are nitrogen, phosphorus, and potassium.

2. The three plants that can use N2 are soybeans, peas, and clover. These plants can use just N2 because they all have a symbiotic bacteria in their roots that converts the N2 from the air into chemically usable form.

3. The form that nitrogen is most present in fertilizer is in a chemical form.

4. The amount of nitrogen in the air total adds up to about 78% of the total amount of air.

5. Nitrogen can harm the environment in many ways. One way is that overuse of fertilizer will cause the nitrogen in the fertilizer to sink in the ground, get into water systems which will eventually harm marine life, and finally kill all the animals.

6. It will reduce the need for fertilizer because making crops that are annual  perennial will reduce the need for fertilizer because instead of using fertilizer each year this would mean that they would only add fertilizer just once over about three years.