Jan's hypothesis was proven to be correct by other students' experiments. it's possible her hypothesis can be made into a a. law b. fact c. educated d. guess theory

The answer is B. Fact

Explanation:

A hypothesis is the step of the scientific method in which an opinion is given about an environmental event that has been observed and analyzed. This hypothesis is generated with the purpose of answering a question of the "Why" of the observer events, and must always be experienced and demonstrated to know its truthfulness.

Since Jan's hypothesis, after having been tested, obtained good results, positive conclusions can be drawn from this hypothesis and can be considered as a scientific fact, because it has the approval of the scientific method.

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