Chapter 6: Section 2
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| soil | the loose, weathered material on Earth's surface in which plants can grow
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| bedrock | the solid layer of rock beneath the soil
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| humus | dark-colored organic material in the soil
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| fertility | a measure of how well soil supports plant growth
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| loam | rich, fertile soil that is made up of about equal parts of clay, sand, and silt
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| soil horizon | the layer of soil that differs in color and texture from the layers above or below it
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| topsoil | mixture of humus, clay, and other minerals that forms the crumbly, topmost layer of soil
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| subsoil | the layer of soil beneth the topsoil that contains mostly clay and other minerals
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| litter | the loose layer of dead plant leaves and stems on the surface of the soil
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| decomposer | soil organism that breaks down the remains of organisms and digests them
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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