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) the process that breaks down rock and other substances at the Earth's surface. B) a process that only involves water. C) the movement of rock particles by wind, water, ice, and gravity.
A) Chemical B) Erosion C) Mechanical
A) True B) False
A) False B) True
A) Repeated freezing and thawing B) sand storms C) Acid Rain
A) O, A, E, D B) O, A, B, C C) A, E, I, O
A) humus B) humans C) litter layer
A) A B) B C) C
A) Sub Soil B) Top Soil C) Litter layer
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) Minerals B) Humus C) Water
A) True B) False
A) rift valley. B) convergent boundary. C) transform boundary.
A) primary waves B) secondary waves C) Q waves
A) crust, mantle, outer core, inner core B) mantle, core, crust, inner core C) outer core, mantle, inner core , crust
A) rock. B) magma. C) fire.
A) layer of hot magma. B) empty. C) a dense ball of iron and nickel. |