Students working on plant extracts want to test the hypothesis. extracts of bougainvillea flowers are effective in reducing symptoms of acne in teenage girls. the students are denied permission to conduct such an experiment for ethical reasons. what is the most likely reason for being denied permission? lack of proper equipmenttoo much of a time commitmentnot enough fundinghumans as test subjects

Answer is

Acne is an infectious disease and one of the most common human diseases. It is characterized by different areas of scaly red skin, pinheads (papules), blackheads and whiteheads, large papules (nodules), and sometimes scarring.

Many plants seem to have inhibitory effects on the growth of such infection by bacteria and fungi. The extracts of Bougainvillea flowers are effective in reducing symptoms of acne in teenage girls. Some Students working on plant extracts want to test the hypothesis. However, they denied permission to carry out experiment because they want to test the results on humans. One can't directly test any experimental result on humans.

Just did the test. Answer is D

Explanation:

Answer is: humans as test subjects. D

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

i dont know it at allnow im just getting points at this pint