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soil, Screenshot 2024-05-12 at 5.37.03 p.m., Screenshot 2024-05-12 at 5.47…
soil
composiotion
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humus: 5%
dark jelly like substance that forms when plants and animals decay and rot; helps makes the soil fertile
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living organisms: 2%
animals, fungi, bacteria, roots etc.
mineral matter:43%
made up of rock particles that have been weathered and eroded, includes stones, sand, silt and clay
soil profiles
A horizon
also known as topsoil, where most of the organisms live
B horizon
also known as subsoil, has more stones, lighter in colour
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C horizon
bedrock, upper section consists of broken rock, lower section contains solid rock
soil type
peaty soil
dark in colour, they develop in in cold upland areas where there is lots of rainfall
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