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12 Cards in this Set
- Front
- Back
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What is topsoil made of?
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weathered rock and humus.
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What is NOT a normal part of soil?
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glass
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What is formed when freezing water cracks rocks apart?
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silt or sand
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Why is it important to protect the topsoil in our environment from erosion?
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It grows plants and food.
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Plants grow better in which type of soil?
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topsoil
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What is soil erosion?
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Topsoil carried away by wind and water.
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How does a rotting tree stump help the environment?
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It decomposes and forms new soil.
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Which layer contains mostly small bits of nonliving material?
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topsoil
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Soil provides plants with what?
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support
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Which layer contains most of the nutrients that plants need to live?
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topsoil
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Which of the following is NOT a way of conserving topsoil?
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planting the same crops every year in a field.
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How are animals, including humans, dependent upon soil?
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Soil provides support and nutrients for plants that animals eat.
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