Porosity is the term that describes the amount of void space within a material. What explains why porosity is important with respect to soils?
A. provides plant roots access to moisture and oxygen
B. provides space for the breakdown of aluminum minerals
C. makes soils less compactable
D. allows iron oxides to accumulate
E. reduces the ability of erosion to strip away topsoil
Answer: A
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A) low buildings and straight streets B) planned according to strict geometrical principles with streets meeting at right angles C) vast open spaces for commercial purposes D) houses built around courtyards E) a defensive wall
Joints can provide rocks with some porosity and permeability
Indicate whether the statement is true or false
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A) carbohydrates B) nucleic acids C) DNA D) proteins E) lipids
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A) solar incidence B) stream channel roughness C) bedrock chemistry D) tidal bore E) water density