The Nitrogen Cycle By: Rachel Brewer Kaci Kelley-Brown Jennifer Moats Dolleen Wiltgen.
The Nitrogen Cycle. 1. What is nitrogen? 1. Nitrogen is a non-metal, gaseous element.
A series of chemical reactions carried out by photoautotrophes. These organisms are the producers in ecosystems. The process transfers energy from sunlight.
The Nitrogen Cycle. The largest single source of nitrogen is in the atmosphere. N 2 makes up 78% of our air! Nitrogen is NOT a greenhouse gas!
