A variety of microorganisms live in the human digestive tract, especially in the small intestine. Their actions aid in digestion, and they help synthesize essential vitamins. What best describes the relationship between a human and the intestinal microorganisms?

A. parasitic symbiosis, because the microorganisms live on food that the human provides
B. mutualistic symbiosis, because all of the species benefit from the relationship
C. predator/prey, because the microorganisms live on food that the human provides
D. decomposition, because the bacteria live on dead or decaying organic matter

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

the answer to your question is:

c. complementary base-pairing

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straight or amphibians are homeothermic to thermal