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