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Rocks and Geology GapFill
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All you ever wanted to know about soil
The upper layer of Earth's surface where plants grow is called the . It is formed from a mixture of weathered and the remains of decayed plants and animals which, together, are called . Soil forms very and is considered by many to be resource. The topmost layer of soil is called the horizon. This is where plants are anchored down by their . Immediately beneath this is the and, beneath that, the weathered rock fragments and . The type of soil found in much of the woodland in the UK is called and is normally a few deep.