Hess wrote that hot magma rose up into the rift valley at the mid-ocean ridges. the lava oozed up and forced the existing seafloor away from the rift in opposite directions. hess called this idea seafloor drifting
true
or
false

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

currents is the correct answer.

well, i believe that the answer is 2. : 3

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.