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