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chapter 4:soil

TermDefinition
Bedrock is the solid layer of rock beneath the soil.
Humus is a dark colored substance that forms when plants and animals decay.
Geologist look at 3 things to identify the type of soil
Soil Fertility How well the soil supports plant growth
Soil Texture The feel and size of the particles in the soil
Soil pH How much acid is in the soil
O Horizon Made of organic material of plant and animal remains
A Horizon Made of topsoil
B Horizon Made of subsoil
C Horizon Made of bedrock that is beginning to weather and break apart
Bedrock Solid layer of rock
Decomposers breaks up remains of dead plants and animals.
Burrowers Mix up the soil
Created by: user-2006714
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