Which of the following is NOT a method of limiting soil erosion on farmland?
a
contour plowing
b
terracing
c
crop rotation
d
overgrazing
d. Overgrazing.
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.
Which of the following is the best way to reduce the need for additional energy consumption?
a
remediation
b
preservation
c
reservation
d
conservation
d. Conservation.
Geothermal energy is a type of energy that harnesses Earth's interior heat. It is obtained by digging deep wells and pumping heated underground water or steam to the surface. It is used worldwide to heat homes and businesses and to make electricity. Which statement supports the claim that geothermal energy is considered a renewable resource?
a
Geothermal energy can be used continuously.
b
Geothermal energy is not quickly replenishable.
c
Geothermal energy is a naturally available resource.
d
Geothermal energy cannot be used to create electricity.
a. Geothermal energy can be used continuously.
What would be the best question to ask in order to immediately determine whether or not an energy resource is renewable?
a
How long until it runs out?
b
How many people use it?
c
How much energy does it produce?
d
How long has it been used?
a. How long until it runs out?
Todd's teacher told him that the gas used to power cars is a natural resource and would run out in the future. What is one way Todd could help to conserve this natural resource?
a
Todd could try to dig in his backyard to find more natural gas.
b
Todd could put water into the car's gas tank instead of gas.
c
Todd could put less gas in the gas tank each time he fills it up.
d
Todd could use a car powered by electricity instead of gas.