It forms the outer layer of a cell. It gives an animal cell its shape. It is selectively permeable.
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Corn wheat and oats are definitely the three primary<span />
My guess would be A. I’m not sure tho. Might want a second opinion
The answer to this question would be: <span>B. Polyculture
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Polyculture is the practice to plant two or more different kind of crop in the field at same time. This method is better than monoculture that only plants one kind of crop. Polyculture needs more labor but it can increase the yield of the field and reduce the incidence of disease.