Soil Formation - Missing Words Crossword!
- __________ ___________ includes both living and decaying animals and plants. (organicmatter)
- Soil contains gases such as carbon dioxide and _____________. (oxygen)
- The ___________ in soil come from finely broken down rock. (minerals)
- Air and ___________ fill the gaps between particles of soil. (water)
- Soil is the uppermost layer of the _________. (earth)