This printable crossword puzzle on the topic of Ecology & Evolution has 16 clues. Answers range from 3 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Our atmosphere contains 78% free _________________________.
Animals need nitrogen to produce ______________________.
What molecule is produced when nitrogen is fixed?
Animals get nitrogen into their systems by eating _______________.
Large organic molecule containing nitrogen that contains your genetic information.
Prokaryote responsible for "fixing" nitrogen.
_________________________ occurs when fertilizer runoff causes excess algae and water weeds.
Process where water "evaporates" from plants.
What "powers" the water cycle?
Rain, snow, sleet, or hail.
The downward entry of water into the soil or rock surface.
Process by which water changes from a liquid to a gas.
Oats, peas, beans, corn
Helps plants to grow.
Bacteria that break down organic matter.
Process by which water vapor turns into liquid water.