Layer of dead leaves and grass on top of soil.

An upper layer of soil consisting of rock fragments, organism nutrients, water, air, and decaying matter.

Rock that makes up Earths crust.

The situation that arises when more soil nutrients are used than the decomposes can replace.

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Soil

Question	Answer
Litter	Layer of dead leaves and grass on top of soil.
Topsoil	An upper layer of soil consisting of rock fragments, organism nutrients, water, air, and decaying matter.
Subsoil	layer of soil below topsoil.
Bedrock	Rock that makes up Earths crust.
Nutrient depletion	The situation that arises when more soil nutrients are used than the decomposes can replace.