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) Chemical B) Erosion C) Mechanical
A) True B) False
A) True B) False
A) Acid Rain B) Repeated freezing and thawing C) sand storms
A) O, A, B, C B) A, E, I, O C) O, A, E, D
A) humus B) litter layer C) humans
A) A B) B C) C
A) Sub Soil B) Litter layer C) Top Soil
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 loses fertility C) It is packed with minerals
A) Humus B) Minerals C) Water
A) False B) True
A) rift valley. B) convergent boundary. C) transform boundary.
A) secondary waves B) primary waves C) Q waves
A) outer core, mantle, inner core , crust B) crust, mantle, outer core, inner core C) mantle, core, crust, inner core
A) rock. B) magma. C) fire.
A) layer of hot magma. B) a dense ball of iron and nickel. C) empty. |