This printable crossword puzzle on the topic of Ecology & Evolution has 12 clues. Answers range from 5 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
NH3
NO3
NO2
Type of fungi that decomposes dead animals and plants
Peas, beans, lentils and peanuts are examples of this
Flash of light during thunderstorms
Meat is a great source of this
These hold the plant stable and collect water for it
Farmers spead manure on their fields for this
Breaking down dead tissue from plants or animals
Converting nitrogen gas to nitrates and other compounds
The other name for nitrification