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Natural Cycles Vocabulary

Name:____________________________

Date:_____________________________
Across
The precipitation that is more acidic than normal rainwater
The process that allows green plants to make sugars from sunlight, water, and carbon dioxide into oxygen
The cycling of chemical elements through living and nonliving parts of an ecosystem
A plant that hosts nitrogen-fixing bacteria in nodules on its roots
A pollutant released into the atmosphere
The conversion of nitrogen in the atmosphere to a form that can be used by plants
Down
A swelling on a plant root that contains nitrogen-fixing bacteria
The process in cells by which oxygen and glucose are used to produce energy and carbon dixoide
The process that releases nitrogen from soil back into the atmosphere
The brown smog produced when air pollutants react with sunlight
The process by which precipitation is gathered into a body of water
The precipitation that flows over the surface of soil