What kind of chemical reaction occurs when fossil fuels and biomass are burned? What is produced in addition to energy?

Fossil fuels were formed from the remains of plants and animals that lived millions of years ago. These remains were eventually covered by layers of rock. Different types of fossil fuels are formed from organic matter depending on the temperature and pressure they were subject to as well as a number of other factors. Coal, oil and natural gas are considered a non-renewable resource, meaning that there is a limited supply of these fuels. Hope this helped :)

Explanation:

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.