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