1.which of the following is not a major component of soil
a. mineral matter
b. air
...
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1.which of the following is not a major component of soil
a. mineral matter
b. air
c. humus
d. earthworms
2.a soils texture is determined by
a. mineral composition
b. type of humus
c. water content
d. particle size
3.the main source of organic matter in soil is
a. water
b. plant
c. fungi
d. bacteria
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