A) a process that is only mechanical.. B) the movement of rock particles by wind, water, ice, and gravity C) the process that breaks rock and other substances down.
A) a process that only involves water. B) the movement of rock particles by wind, water, ice, and gravity. C) the process that breaks down rock and other substances at the Earth's surface.
A) Chemical B) Mechanical C) Erosion
A) False B) True
A) False B) True
A) Acid Rain B) Repeated freezing and thawing C) sand storms
A) A, E, I, O B) O, A, E, D C) O, A, B, C
A) humus B) humans C) litter layer
A) B B) C C) A
A) Litter layer B) Sub Soil C) Top Soil
A) True B) False
A) keeps the dead weeds and stalks from the previous year to return nutrients to the soil B) is done on the contours of the landscape C) is a poor way to conserve soil
A) It is packed with minerals B) It loses fertility C) It becomes the best soil for planting
A) Water B) Humus C) Minerals
A) True B) False
A) rift valley. B) convergent boundary. C) transform boundary.
A) primary waves B) Q waves C) secondary waves
A) crust, mantle, outer core, inner core B) outer core, mantle, inner core , crust C) mantle, core, crust, inner core
A) rock. B) magma. C) fire.
A) empty. B) layer of hot magma. C) a dense ball of iron and nickel. |