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| Science asks the questions... |
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| Photosynthesis ______ mineral nutrients other than carbon, hydrogen, and oxygen. |
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| (t/f) The soil is more intensely weathered than the regolith below it. |
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| If the regolith is very deep, we normally stop describing it as soil after ____ meters deep. |
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| In most soil, the soil horizons are formed by _____. |
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| Most Al soils are ____ soils. |
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| An "A" master horizon is _______ |
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| a surface mineral horizon |
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| The solum ______ the "C" horizons in a soil. |
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| _____ minerals are formed during the weathering processes that form a soil. |
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| (t/f) The soil is where decay occurs in the land ecosystem. |
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| (t/f) Decaying organic matter tends to improve a soil's structure. |
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| Plants normally take up _____ from the soil solution. |
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| The soil air tends to be ____ in carbon dioxide than the atmosphere. |
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| The crust is _______ dense than the mantle below it. |
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| Plate tectonics is powered by... |
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| decay of radioactive elements in the earth |
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| New continental material is formed in ______ systems. |
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| Ten pounds of sand has ______ surface area than/as a ten pound sandstone rock. |
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| In a lithosequence the soils are formed on _____ parent materials. |
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| Circulation of the atmosphere and oceans moves heat _______ |
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| from the equator toward the poles |
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| The Rocky mountains are ______ than the Appalachian mountains. |
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| Corn was domesticated in the Middle East about 25,000 years ago. |
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| _____ agriculture requires large amounts of energy in addition to sunlight. |
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| Mollisols are _____ soils. |
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| Andisols are formed on _______ |
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