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) 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) True B) False
A) Acid Rain B) sand storms C) Repeated freezing and thawing
A) O, A, E, D B) O, A, B, C C) A, E, I, O
A) humans B) humus C) litter layer
A) B B) A C) C
A) Sub Soil B) Litter layer C) Top Soil
A) False B) True
A) keeps the dead weeds and stalks from the previous year to return nutrients to the soil B) is a poor way to conserve soil C) is done on the contours of the landscape
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) False B) True
A) convergent boundary. B) rift valley. C) transform 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) magma. B) fire. C) rock.
A) empty. B) layer of hot magma. C) a dense ball of iron and nickel. |