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| Soil is a mixture of weathered rock, mineral fragments, water, air, and |
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| The layer of soil that contains the most organic material is called the |
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| Is mechanical weathering caused by carbonic acid? |
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| Chemical weathering is more rapid in |
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| Mechanical weathering is more rapid in a |
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| Soil erosion can be slowed by |
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| shelter belts, no-till farming |
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| the rate of weathering depends upon the area's |
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| the rock and mineral fragments in soil come from rock that has been |
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| The diffrence between mechanical and chemical weathering is |
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| the way they effect the rock |
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| Plants cannot grow without |
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| what region regions are especially vunerable to erosion because their soils are g\useful to farmers for only a few years before their nutrients are gone? |
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| Ice wedging is brought about by |
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| water freezing and thawing |
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| Minerals found in the B horizon were dissolved in water and carried there by a prosses called |
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| Five factors that affect soil development are |
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Definition
1. climate
2. slope of land
3. type of rock.
3. vegitaion
4. time |
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| When water mixes with carbon dioxide gas in the air or soil, |
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| What turns and loosens soil, improving it for crops, but leaving soil vulnerable to erosion? |
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| When does soil erosion occur? |
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| Overgrazing forest harvesting steep slopes |
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Term
| three horizons in figure 7-1 make up soil |
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| what horizon in figure 7-1 contains the most humus? |
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| what horizon shown in figure 7-1 has the least organic matter |
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| what horizon shown in figure 7-1 is the most like the parent material? |
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| Topsoil is the what horizon in figure 7-1 |
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| When farm aminals eat the grass on land until there is almost no ground cover, it is called |
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| what is made out of dead plant and animal matter that has decayed due to bacteria and fungi? |
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| Discribe the factors that influence the development and type of soil in a certain area. |
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| Factors are time, slope,climate, amount of vegitation, and type of rock |
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| Name three things farmers can do to reduce soil ersoin shelter belts, contour farming and No-till farming |
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| ____ was a jew from nazareth that preached from AD 30 to AD 33 |
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| ____ was a jew from nazareth that preached from AD 30 to AD 33 |
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| ____ was a jew from nazareth that preached from AD 30 to AD 33 |
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| ____ was a jew from nazareth that preached from AD 30 to AD 33 |
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| roman officals began to see the christans as a threat to the ____ ____ ____ |
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| to _________ means to mistreat or torture someone |
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| gunpowder was invented by the ________ |
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| prince shotoku used china as an example for japa ______ ______ ______ |
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