It is mostly about soil, how it was formed and soil erosion. I got these notes from my natural science class and this is at grade 8 level
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3 main resources agriculture depend on
How soil is formed
Soil is origin
Humus
Loam
The amount of time soil takes to form
Soil structure:
Organic particles
Inorganic particles
Organic material/humus
Sand
Silt
Clay
Waterlogged
Why do plants need air
What do plants need to grow
In a teaspoon of soil you can expect to find
Earthworms
Dung beetles
Bacteria and fungi
Termites and ants
Soil erosion
Plants prevent soil erosion for the following reasons
More reasons
Ways to prevent soil erosion
More ways to prevent soil erosion
Why is soil erosion bad
