You are walking to school when you encounter a barking dog. you start sweating and contemplate whether you should run away. which nervous system is primarily responsible for this "fight-or-flight" reaction?

When any one encounter a stressful situation such as encounter of barking dog in this question. The stressful situation produces the “fight-or-flight” response. The hypothalamus stimulates the sympathetic nervous system and the adrenal gland. The sympathetic nervous system uses nerve pathways to initiate reactions in the body. Whereas, adrenal gland secretes hormone Adrenalin into the bloodstream. The combined effects of these two systems are the fight-or-flight response.

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