Nitrogen

1. The article lists three chemical elements needed for plant growth. Name them.

The chemical elements are nitrogen, phosphorus, and potassium.

2. Most plants cannot use diatomic nitrogen to help them grow. Name three plants that can use N2 and explain why they are able to use N2.

The three plants are soybeans, peas, and clover. They can use N2 because of the bacteria that lives on the roots of these plants convert into nitrogen gas.

3. In what form is nitrogen present in most fertilizers?

Nitrogen is present in most fertilizers because