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1Mechanical weathering of soil
A)Does not change the chemical nature of the rock
B)Occurs quickly
C)Changes the chemical make up of the parent material
D)None of the above


2Examples of chemical weathering processes of soil include
A)Oxidation
B)Hydrolysis
C)Dissolution
D)All of the above


3Biological processes do not play a role in soil development.
A)True
B)False


4Most plants grow well in soil with a pH of between
A)1 and 3
B)3 and 5
C)6 and 7
D)8 and 10


5The best soil type for agriculture is
A)Clay
B)Loam
C)Sand
D)All of the above


6Soil litter is a term used to describe
A)Materials left on the ground by people
B)Undecomposed or partially decomposed organic matter on the land surface
C)Rocks exposed at the land surface
D)Clay at the land surface


7Erosion is the transportation of soil by water, wind or ice.
A)True
B)False


8Topsoil is found in which soil horizon?
A)A horizon
B)B horizon
C)C Horizon
D)E Horizon


9In order to reduce soil erosion from very steep slopes, the best tillage practice would be
A)Contour farming
B)Terracing
C)Strip farming
D)All of the above


10Land degradation affects approximately what percent of the world's rain-fed agricultural lands
A)20
B)40
C)60
D)80


11Compared to conventional tillage, conservation tillage requires
A)More time involved and less fuel use per hectare
B)Less time involved and more fuel use per hectare
C)More time involved and more fuel use per hectare
D)Less time involved and less fuel use per hectare





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