Khan Academy is great! Also, Alison (it's a website) has some free courses as well.
- Parent material. Few soils weather directly from the underlying rocks. ...
- Climate. Soils vary, depending on the climate. ...
- Topography. Slope and aspect affect the moisture and temperature of soil. ...
- Biological factors. Plants, animals, micro-organisms, and humans affect soil formation.
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Humidity. I think you need to work on your grammar a little bit pal, if you ever need help with ELA homework, hmu.
