Energy is the fundamental need for lives. Fossil fuel is the energy source that is most needed in society. It is now replaced with solar energy as fossil fuels are nonrenewable resources.
Nonrenewable resources are energy sources that are finite in amount and get depleted after some time as it takes millions of years to produce these resources. Fossil fuels though are needed but are nonrenewable and cause pollution.
Solar energy is a renewable source that is present in abundant and infinite quantity and does not get depleted fast after they are used excessively. They are also environmentally friendly and do not produces much pollution.
Therefore, fossil fuel and solar energy are the most demanded sources.
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