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desertification
desert conditions in areas where plant cover was destroyed
open pits by removal of soil from surface of the ground
when animals eat large amounts of land cover
the cleaning and purifying of soil
overgrazing
when animals eat large amounts of land cover
the recycled nutrients after being broken down
the cleaning and purifying of soil
desert conditions in areas where plant cover was destroyed
crop rotation
plant different crops on the same field in different years
the recycled nutrients after being broken down
desert conditions in areas where plant cover was destroyed
reduce number of times soil is tilled
conservation tillage
the recycled nutrients after being broken down
when sulfide minerals react with air and water
plant different crops on the same field in different years
reduce number of times soil is tilled
terrace
plowing along curves or contours of slopes
reduce number of times soil is tilled
flat, steplike areas built on a hillside to hold rainwater
planting trees between fields to reduce soil carried off
contour plowing
flat, steplike areas built on a hillside to hold rainwater
when sulfide minerals react with air and water
reduce number of times soil is tilled
plowing along curves or contours of slopes
windbreaks
plowing along curves or contours of slopes
planting trees between fields to reduce soil carried off
flat, steplike areas built on a hillside to hold rainwater
when sulfide minerals react with air and water
The breakdown of rock by acidic water is an example fo
oxidation
chemical weathering
desertification
mechanical weathering
What is the main component of soil?
humus
rock particles
air
water
contour plowing, strip-cropping, and terracing are conservation methods made to reduce the
acidity in soil
activity of microorganisms
runoff water
pore space in soil
erosion
the downhill movement of masses or rock and soil
when sediment is put in a new location
weathered particles are picked up and moved to another place
a sudden fast movement of rock and soil
deposition
a sudden fast movement of rock and soil
the downhill movement of masses or rock and soil
weathered particles are picked up and moved to another plac
when sediment is put in a new location
mass wasting
weathered particles are picked up and moved to another place
when sediment is put in a new location
the downhill movement of masses or rock and soil
a sudden fast movement of rock and soil
landslide
weathered particles are picked up and moved to another place
the downhill movement of masses or rock and soil
a sudden fast movement of rock and soil
when sediment is put in a new location
Why is soil an important resource?
it helps create farms
it is food for animals
it helps fill in space for development
helps plant growth, purifies water, and recycles nutrients
Which human activity does NOT directly affect soil?
construction and development
mining
farming
hunting
