Answer:
Both deltas and alluvial fans are types of depositary land forms created by rushing rivers.
Explanation:
Both deltas and alluvial fans are types of depositary land forms created by rushing rivers. Alluvial fans are created at the foothills, where streams running from a higher elevation break into low gradient foothills, while deltas are formed at the mouth of streams, where they enter seas or saline water bodies.
Following are the correct options for this question:
- Build more windmills
- Develop cost-efficient solar energy
- Improve gas mileage in cars
- Reduce the use of nonrenewable energy sources
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.
