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Soil is composed mainly of which ingredients?
It contains nutrients, which feed plants
make space for air and water
weathering
topsoil
air, rock pieces, decayed organic matter, water, minerals
terracing
sandy soil cannot hold enough water
there will be no roots to hold the soil in place and the wind can blow it away
Why is humus an important part of soil?
It contains nutrients, which feed plants
make space for air and water
weathering
topsoil
air, rock pieces, decayed organic matter, water, minerals
terracing
sandy soil cannot hold enough water
there will be no roots to hold the soil in place and the wind can blow it away
Which geologic process is most responsible for soil formation?
It contains nutrients, which feed plants
make space for air and water
weathering
topsoil
air, rock pieces, decayed organic matter, water, minerals
terracing
sandy soil cannot hold enough water
there will be no roots to hold the soil in place and the wind can blow it away
The layer of soil with the most humus is
It contains nutrients, which feed plants
make space for air and water
weathering
topsoil
air, rock pieces, decayed organic matter, water, minerals
terracing
sandy soil cannot hold enough water
there will be no roots to hold the soil in place and the wind can blow it away
Why is it easy for the wind and rain to erode the soil after a farmer has removed the plants from his fields?
It contains nutrients, which feed plants
make space for air and water
weathering
topsoil
air, rock pieces, decayed organic matter, water, minerals
terracing
sandy soil cannot hold enough water
there will be no roots to hold the soil in place and the wind can blow it away
Why do plants not grow well in sandy soil?
It contains nutrients, which feed plants
make space for air and water
weathering
topsoil
air, rock pieces, decayed organic matter, water, minerals
terracing
sandy soil cannot hold enough water
there will be no roots to hold the soil in place and the wind can blow it away
A sloping piece of land that has had flat areas like steps built on it so that people can grow crops there
It contains nutrients, which feed plants
make space for air and water
weathering
topsoil
air, rock pieces, decayed organic matter, water, minerals
terracing
sandy soil cannot hold enough water
there will be no roots to hold the soil in place and the wind can blow it away
What is the role of decomposers in soil?
It contains nutrients, which feed plants
make space for air and water
weathering
topsoil
air, rock pieces, decayed organic matter, water, minerals
terracing
sandy soil cannot hold enough water
there will be no roots to hold the soil in place and the wind can blow it away
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