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6 Cards in this Set
- Front
- Back
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components of true soils ? |
minerals
bacterial and organic materials
air
moisture |
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formation of topsoil ? |
when minerals are added to the botttom of soil ------organic materials are added to the top -------------the top layer with humus is called topsoil
and also formed when stuff are decayed |
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how long does it take topsoil to form in canada ? |
very slow process
it has been 15 to 25 cm normally
but in the grassland of the prairies it was 40 to 100 cm |
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leaching |
in the areas with percipitation---- water removes the nutrients making it thin. |
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calcification |
as water in the topsoil evaporates ----------the water in the bottom goes up to make up for it, leaving behind the nutrients in the soil making it thick. |
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why does sand rock size matter ? |
because large rocks let the rain pass quickly through the soil and small rocks don't
mixture of both of them makes it moisture and perfect for the plants to take nutrients. |
