Match the causes of soil erosion with the soil conservation practice intended to reduce that erosion.Maintain vegetation:
A. Keep soil covered
B. Contour plowing
C. Provide shelter for fields
D. Return organic matter to soil
Answer: A
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Tentative explanations that are formulated to explain observed phenomena are known as ____
A)tautologies B)theories C)conjectures D)perspectives E)hypotheses
In terms of particle sizes, secondary minerals are usually
A. smaller than primary minerals, because they have undergone fairly intense chemical weathering processes compared to primary minerals. B. larger than primary minerals, because they are fairly resistant to physical weathering processes compared to primary minerals. C. larger than primary minerals, because they are fairly resistant to chemical weathering processes compared to primary minerals. D. smaller than primary minerals, because they have undergone fairly intense physical weathering processes compared to primary minerals.
Yellowstone National Park has the three necessary ingredients for hydrothermal activity: molten material close to the surface, broken rock material close to the surface, and ________
A) plentiful precipitation B) relatively high altitude C) much limestone D) steep slopes E) acidic groundwater
What is NOT true regarding transform boundaries?
A. Tectonic plates slip past each other laterally. B. Movement occurs along great vertical fractures. C. They neither create new crust nor destroy old crust. D. They’re associated with very little seismic activity. E. They mostly coincide with midocean ridge systems.