Why are plants roots important to prevent erosion?

a. plant roots anchor the soil in place.
b. plant roots build a barrier, preventing wind or rain from reaching soil.
c. plant roots absorb the water that would otherwise wash away the soil.
d. plant roots take up space, leaving very little soil present to erode.

quite sure it's not b or d and sources online are either saying it's a or c.

Underground, plant roots look like a tangled web. roots hold soil in place and prevent water from washing it away.

the answer is A

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the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: