Question

Energy is released from fossil fuels when they are ______________.
A. Burned
B. Cooled
C. Pressurised
D. None of the above

Answer 1

A fossil fuel is a fuel that is generated by natural processes, such as anaerobic decomposition of buried dead creatures, and contains organic molecules that were formed during ancient photosynthesis and release energy when burned. These creatures, as well as the fossil fuels they produce, are generally millions of years old, if not more than 650 million years old.

Complete step by step solution:
Fossil fuels are made up of the remains of once-living creatures. It takes decades for biological stuff to develop. Carbon and hydrogen bonding make up the majority of fossil fuels. Coal, oil, and natural gas are three forms of fossil fuels that may all be used to generate energy. Coal is a solid fossil fuel created by the breakdown of land plants over millions of years. Deposits become coal when layers are crushed and heated over time. In comparison to the other two fossil fuels, coal is plentiful. Analysts anticipate that as oil supplies grow scarcer, global coal use will rise. Coal reserves might last for another 200 years or more. Mines are typically used to extract coal.
Because fossil fuels can be burnt (oxidised to carbon dioxide and water) and provide substantial quantities of energy per unit mass, they are extremely important. Coal has been used as a source of energy since before the beginning of time. Coal was used to fuel the smelting of metal ore in furnaces. While ancient peoples burnt semi-solid hydrocarbons from seeps, they were primarily utilised for waterproofing and embalming.
Hence option A is correct.

Note:
The utilisation of fossil fuels was fundamental to the industrial revolution, and it has contributed to massive increases in the level of life throughout the world during the last several centuries. However, burning fossil fuels produces a variety of negative externalities, or detrimental environmental consequences that are felt by those who are not consuming the fuel. The real consequences vary depending on the fuel.