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