What could humans do to decrease soil erosion?
a
develop land for agriculture
b
plant more cover crops
c
cut down forests for logging
d
allow farm animals to overgraze
b. Plant more cover crops
Loss of topsoil may lead to the pollution of rivers and streams by
a
decreasing nutrients.
b
decreasing erosion.
c
increasing cropland.
d
increasing runoff.
d. increasing runoff.
hich of the following is a liquid form of fossil fuel that is used to make gasoline?
a
coal
b
peat
c
petroleum
d
natural gas
c. petroleum
What can all non-renewable resources theoretically be?
a
converted to nonmetallic minerals
b
exhausted or depleted
c
converted to renewable ones
d
recycled or reused
b. exhausted or depleted
Which statement gives the best explanation about what will happen to the global oil reserves as time goes on?
a
The global oil reserves will turn into alternative forms of fuel.
b
The global oil reserves will continue to increase.
c
The global oil reserves will remain relatively steady.
d
The global oil reserves will continue to decrease.
d. The global oil reserves will continue to decrease.
What could humans do to decrease soil erosion?
a
develop land for agriculture
b
plant more cover crops
c
cut down forests for logging
d
allow farm animals to overgraze