Why is planting a wide variety of plant species better than planting only one type? a) diversity is best for the environment. b) a wide variety would mean less wear and tear on the soil. c) it would lead to desertification prevention. d) combining biological and chemical controls are the conditions of a healthy farm.

The correct answer is option C

The variability in the ecosystem helps to reduce the risk of negative impact. Different plant types help in holding the soil at different depths and also hold the essential nutrients at all soil depths to prevent the loss of both soils and its nutrients.

the answer is c

Explanation:

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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