This is the precipitation that is more acidic than normal rainwater.

The conversion of nitrogen in the atmosphere to a form that can be used by plants is:

This is the cycling of chemical elements through the living and nonliving parts of an ecosystem.

Collection is the process by which pollution and runoff is gathered into a body of water. True or False?

This is the process that allows green plants to make sugars from sunlight, water, and carbon dioxide and that releases oxygen into the atmosphere.

This is the process in cells by which oxygen and glucose are used to produce energy and carbon dioxide.

A plant that hosts nitrogen-fixing bacteria in nodules on its roots is called a legume. True or False?

What is a swelling on a plant root that contains nitrogen-fixing bacteria called?

This is the process that releases nitrogen from soil back into the atmosphere.