Which items describe possible solutions to air pollution?
build more windmills
cut down the trees in the rain forests
decrease the use of hydroelectric power
develop cost-efficient solar energy
improve gas mileage in cars
increase manufacturing
reduce the use of nonrenewable energy sources

Following are the correct options for this question:

Any undesirable change occurs in the air due to addition of pollutants is called air pollution. The major air pollutants are sulfur dioxide which is released from the combustion of fossil fuels like coal, petroleum and from factories. Bedsides, sulfur dioxide dust and smokes are other pollutants. Building of more wind mills and developing low cost solar energy will reduce air pollution as they will provide clean energy and will reduce dependency on coal burning in thermal power plant. Improving as mileage in cars will also reduce emission of sulfur dioxide, hence reduce air pollution. Building of more wind mills and developing low cost solar energy are renewable source of energy, will reduce use of nonrenewable energy sources such as fossil fuels.

heat from the core of the earth causes convection currents to occur in the mantle. these currents slowly move the crust around.

a. i. only is correct.