Why do naturalists suggest that we plant more trees? plants use co2 but do not release any, thus maintaining a balance of co2 in the atomsphere. plants release co2 through respiration and use it for photosynthesis, thus decreasing the amount of co2 and maintaining its balance in the atmosphere. plants do not use any co2, thus maintaining low levels of co2 and balancing its level in the atmosphere.

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

cell regulation is conducted by special proteins.