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Soil - Coggle Diagram
Soil
Soil horizon
A horizon
Topsoil
Rich in humus and minerals
is home of many living thing
B horizon
Subsoil
Lighter and harder than topsoil
C horizon
Weatered bedrock
Bedrock
the rock and humus in soil may not be same everywhere
Why is soil important
Permeability is important for plant
plants and animals need porous space to live
Sandy soil is very porous/ water moves fast/ high permeability
fine soil is porous with low permeability
the type of soil and plants to grow on it is important
Pore space
space between particles of soil
hold air and water
act like filters
material with pore space are called porous
Factors the affect soil
climate
ecosystem
bedrock
steepness
Thin soil
poor for growing
erode quickly
Thick soil
Permebility
how fast water passes through a porous material
Affect by the size and number of pore space
Transported soil
soil that from place to place