A scientist has been tracking and studying a population of deer in Yellowstone National Park. He surveys the population every six
months. Usually, the population is thriving and has a gene pool with a wide variety of traits. But during one six-month period, an
event occurred that affected the population, and when the scientist returned, the amount of genetic variation had decreased
significantly. Which of the following is most likely the event that occurred to change the population?

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

1. desertification

2. captive breeding

3. black rhinoceros

4. renewable resources

explanation:

mark brainliest!