This printable crossword puzzle on the topic of Ecology & Evolution has 10 clues. Answers range from 5 to 18 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
step to make nitrogen useful to plants
What do farmers add to the soil to make it more rich in nitrogen
the process by which nitrates are converted to nitrogen gas
plants use nitrogen to make ___________
the process of ammonium getting changed into nitrates by bacteria
how plants get nitrogen
the part of the plant that absorbs nutrients from the soil
bacteria that convert ammonia to nitrites and nitrites to nitrates
the process by which the protein in faeces, dead plants or animals is converted to ammonia
organisms such as bacteria and fungi