The organic layer of soil that is made of still identifiable items is

How long does it take for fertile topsoil to form?

Which horizon is known as bedrock?

Which layer would be best to use to help plants grow?

Which is not needed for soil formation?

Which layer is solid rock?

Which of the following would you expect to be very nutrient rich?

Which horizon layer is known as parent material?

Which horizon is found at the top?

Which layer is made of parent material?

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