What are the parts of earth's mantle? a. inner core, asthenosphere, lithosphere b. lithosphere, asthenosphere, mesosphere c. crust, lithosphere, asthenosphere d. mesosphere, asthenosphere, troposphere

The answer is A) Inner core, asthenosphere, and lithosphere.  

Explanation:

The earth’s mantle is composed of several layers. Some of them are the inner core, the asthenosphere and the lithosphere. The inner core refers to the central and most deep sphere of the earth. It is composed mostly of iron. The asthenosphere refers to the layer of the interior of the Earth that extends approximately between 50 and 100 km deep, it is formed by viscous materials that can deform. And, the lithosphere is the external and rigid layer of the Earth, of varying depth between 10 and 50 km, consisting mostly of silicates and composed of the crust and part of the mantle.

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

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.