Solar energy is a renewable energy source, while coal, natural gas, and oil are all fossil fuels.

Fossil fuels are primarily composed of carbon, along with varying amounts of hydrogen, oxygen, and other elements.

Coal is formed from the remains of ancient plants that have been subjected to heat and pressure over millions of years.

Oil is formed from the remains of ancient marine organisms that have been subjected to heat and pressure over millions of years.

Natural gas is formed from the remains of ancient animals that have been subjected to heat and pressure over millions of years.

Coal is the most abundant fossil fuel in the Earth's crust, followed by natural gas and oil.

Coal is the most widely used fossil fuel for electricity generation, followed by natural gas and oil.

Coal is the most polluting fossil fuel, as it releases more greenhouse gases and other pollutants into the atmosphere than natural gas or oil.

Oil is the most expensive fossil fuel to extract, as it requires more complex and specialized equipment and techniques.

Oil is the most versatile fossil fuel, as it can be used for a wide range of purposes, including transportation, heating, and electricity generation.

Fossil fuel use has a range of environmental impacts, including air pollution, water pollution, land pollution, and climate change.

Fossil fuel use has a range of economic impacts, including job creation, economic growth, energy security, and price volatility.

Fossil fuel use has a range of social impacts, including health problems, environmental justice, energy poverty, and political instability.

There are a number of challenges to transitioning away from fossil fuels, including cost, technology, infrastructure, and political will.

There are a number of opportunities for transitioning away from fossil fuels, including renewable energy, energy efficiency, carbon capture and storage, and behavioral change.