Renewable energy sources:
Renewable energy cannot, at present, replace fossil fuels or our use of them.
Energy from the burning of fossil fuels (coal, oil and natural gas) is non-renewable.
Hydrogen is not a fossil fuel because it is renewable. Sources of energy that are non-renewable are considered fossil fuels
Because if we use renewable sources, it's with us forever. fossil fuels and non-renewable sources will run out someday.
Fossil fuels are a non-renewable energy source.
Fossil fuels (coal, oil and natural gas).
Fossil fuels are non-renewable so have a finite supply. This means that they will eventually run out. They also produce carbon dioxide when burnt which contributes towards global warming. Renewable sources do not pollute the atmosphere and do not run out. Therefore renewable sources are better for the environment, but fossil fuels give more energy per mass. Which is better depends on what you look for, environment and sustainability or high density of energy. Renewable energy still gives out sufficient energy, so renewable sources are better.
They are fossil fuels, currently supplying around 93% of the world's energy. However, renewable sources of energy, such as wind or tidal power only provide 7%. Fossil fuels are fast running out and renewable sources are definitely the way forward.
Energy resources that are not fossil fuels are often collectively called "renewable resources." These include wind, solar, hydroelectric, geothermal energy sources.
Fossil fuels are non-renewable. Once we've burnt them, they're gone!
Fossil fuels (coal, oil and natural gas).
Because for them to replenish takes millions of year.