Nitrogen Cycle Crossword
This printable crossword puzzle on the topic of Ecology & Evolution has 10 clues. Answers range from 7 to 22 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
78% of gases in the atmosphere
All organisms need nitrogen to build ___
Nodules on the roots of plants where nitrogen-fixing bacteria live
Organisms in soil and water that add nitrogen to the atmosphere
Chemical that nitrogen-fixing bacteria in soil and root nodules produce
Nitrogen containing compounds
Organisms that fix atmospheric nitrogen into chemical compounds
Process in which nitrogen is cycled between the atmosphere, bacteria and other organisms
Organisms that break down waste in the nitrogen cycle
Nitric oxide combined with the oxygen and water vapor and can dissolve in rain in snow
