Archimedes (287 bc - 212 bc), a greek physicist, found that when an object floats on water, the volume of water displaced is equal to the volume of the object itself. today, this idea is used to find the weight of ships. what can be concluded from this?
a) all scientific knowledge of the greeks is still applicable today.
b) some scientific knowledge is accepted even if there is no evidence.
c) ancient scientific discoveries are often applicable in the modern world. d) this idea, proposed by archimedes, is the only ancient idea that is still applicable.

i really wish i could answer this question for you

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