Is wind and sun a pair of sources of energy
battery
Solar energy, eolic (wind) energy, geothermic energy.
Natural energy sources
one of the examples od unconvential sources of energy is Methane Gas.=And Also coal.=
They are source of electrical energy.
solar and wind power
Natural resources
Green renewable energy sources
proteins are structural materials, energy sources, and chemical messengers.
Sunlight and water are 2 examples of renewable sources because they will never run out.
Oil, coal, wood, solar, wind, water (hydroelectric).
Conventional energy sources involve burning a fuel to produce heat which will drive a piston like in a car engine or make steam for a turbine like in a power plant. In this way we are converting the chemical energy into kinetic energy. This way they are more popular than non-conventional power sources. Non conventional energy sources usually do not involve burning. Solar energy, wind, water energy, geothermal and nuclear fusion are examples of non conventional energy sources. Some of these sources produce pollution and most of them will run out for as long as humans are around.