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) True B) False
A) Repeated freezing and thawing B) Acid Rain C) sand storms
A) A, E, I, O B) O, A, E, D C) O, A, B, C
A) humans B) humus C) litter layer
A) A B) B C) C
A) Sub Soil B) Top Soil C) Litter layer
A) False B) True
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 becomes the best soil for planting B) It is packed with minerals C) It loses fertility
A) Water B) Minerals C) Humus
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) rock. C) magma.
A) a dense ball of iron and nickel. B) layer of hot magma. C) empty. |