Which of the following statements about the impact of surface and underground mining of minerals is correct?
a. underground mining is just as disruptive to the surface as strip and open-pit mining.
b. precipitation seeping through piles of waste rock taken from strip and open pit mines can dissolve toxic metals and other chemicals that can then flow into nearby rivers and streams.
c. strip and open-pit mining disturbs large areas of earth’s surface.
d. all of the above

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

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;