Comment on the origin of coal
Answers
Answer:
Coal is a fossil fuel and is the altered remains of prehistoric vegetation that originally accumulated in swamps and peat bogs. The energy we get from coal today comes from the energy that plants absorbed from the sun millions of years ago.
Answer:
It is generally accepted that most coals formed from plants that grew in and adjacent to swamps in warm, humid regions. Material derived from these plants accumulated in low-lying areas that remained wet most of the time and was converted to peat through the activity of microorganisms.
Explanation:
COAL Wikipedia
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen.[] Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands—called coal forests—that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian) and Permian times.
- Coal is primarily used as a fuel.
- While coal has been known and used for thousands of years, its usage was limited prior to the Industrial Revolution.
- With the invention of the steam engine coal consumption increased.
- As of 2016, coal remains an important fuel as it supplied about a quarter of the world's primary energy and two-fifths of electricity.
- Some iron and steel making and other industrial processes burn coal.
The largest consumer and importer of coal
is China.
China mines almost half the world's coal, followed by India with about a tenth. Australia accounts for about a third of world coal exports followed by Indonesia and Russia.
