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