The importance of soil

If topsoil is the first layer, what are the other two bottom layers called?

• sand and clay

• subsoil and bedrock

• humus and silt

What is the top layer of soil called?

• subsoil

• topsoil

• bedrock

What is decayed matter (from plants and animals) soil called?

• humus

• silt

• clay

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What do plants need to live and grow?

• nutrients

• clay

• rocks

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What is the best layer of soil to grow plants in?

• topsoil

• subsoil

• bedrock

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What layer of soil is humus located in?

• subsoil

• bedrock

• topsoil

Which soil type is made up of small rocks?

• humus

• clay

• sand

Which soil has particles that are bigger than clay but smaller than sand?

• silt

• clay

• sand

Which type of soil doesn't hold water well?

• clay

• sand

• humus

Why is soil important to the forest?

• It stores sunlight in the leaves

• It attracts insects that eat leaves

• It provides nutrients to the trees

• It warms the air around the trees

Tags

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