This printable crossword puzzle on the topic of Ecology & Evolution has 10 clues. Answers range from 6 to 23 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Very small organisms that can convert atmospheric nitrogen to chemical compounds.
A process where Nitrogen is cycled between the atmosphere, bacteria, and other organisms.
They break down wastes, like urine, dung, leaves, and other decaying plants and animals.
Bacteria that live inside the swellings of certain roots.
Water that flows and gathers in rivers and lakes, carrying nitrogen with it.
A type of weather that helps convert atmospheric nitrogen using heat.
Organisms of this Kingdom get nitrogen by consuming plants or other organisms.
Makes up 78% of the earths atmosphere.
All organisms need nitrogen to make _______, which are used to build new cells.
The kind of plants that nodules grow on, like beans, peas, and clover.