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