Well solar power is only active in the daytime I think.
Some alternative power sources that can be used instead of batteries include solar power, wind power, hydroelectric power, and fuel cells.
Some alternative energy sources that do not produce greenhouse gases include solar power, wind power, hydropower, and nuclear power.
Some alternative energy sources that can help replace fossil fuels include solar power, wind power, hydropower, geothermal energy, and bioenergy. These sources are renewable and produce less pollution than fossil fuels, making them more sustainable options for the future.
Some alternative power sources for bike lights that do not require batteries include dynamo hubs that generate electricity as the wheel turns, solar-powered lights that charge during the day, and kinetic energy lights that are powered by the motion of the bike.
it means like energy sources that wont be used up . Energy sources that aren't fossil fuels; like wind power, water power, and look LOOK AT YOUR TEXT BOOK
Urin
Some alternative sources of Vitamin C that do not contain citric acid include bell peppers, strawberries, broccoli, and kiwi.
Alternative energies refer to energies generated such that they do not deplete the natural resources or harm the environment. Examples of alternative energies used in the U. S. are biomass electricity, hydroelectric and ocean energy.
Alternative sources of iodine besides salt include seafood, dairy products, eggs, seaweed, and some fruits and vegetables.
Some sources of alternative fuels include biodiesel (from vegetable oils or animal fats), ethanol (from corn, sugarcane, or other plant matter), hydrogen (from electrolysis of water or reforming of natural gas), and natural gas (compressed or liquefied). These alternative fuels can help reduce greenhouse gas emissions and dependence on fossil fuels.
Some ways to avoid using carbon based fuel such as coal and oil is to use alternative sources of energy instead. Some things that can be used are solar power, hydroelectric power, and wind power.
A spring or tensioned system can hold and deliver power. A weight on a line can store and supply energy. Compressed gasses are a source of energy. Wind and water power have been used for thousands of years by mankind to do work.