One of the ways is the use of clean, renewable energy. Renewable energy does not deplete natural resources or cause any environmental damage. There are many types of renewable energy which include bioenergy, wind energy, hydropower, solar energy and geothermal energy. Bioenergy is produced from trees and plants such as corn and soybeans, which are harvested to produce energy in the form of biofuel. Wind energy is created by wind turbines, which convert kinetic energy into mechanical energy and finally converted into electricity. The only disadvantage of wind energy is that it causes noise pollution. Solar energy captures the sun's energy. Hydroelectric energy is produced by the gravitational force of falling or flowing water. Many of the world's dams are also used for hydroelectric power. Geothermal energy is produced from the molten interior of the Earth