Smog
The layer of coal between rocks is called a coal seam or coal bed. This layer forms over millions of years from compressed plant material.
When a rock is produced from a layer of plants, it is called coal. Coal forms from the remains of plants that have been compacted, heated, and subjected to pressure over millions of years.
It is called an Acid Rain.
Rocks formed from ancient plants are called coal. Coal is a sedimentary rock that forms from the accumulation and compression of plant material over millions of years.
small pieces of coal are called slack. Thank you!
Peat is the first form of true coal in the process of coal formation. It is a soft, organic material that forms in waterlogged environments through the partial decay of plant matter. Peat is the precursor to lignite, the lowest rank of true coal.
Hydrocarbons
Carbon is the element that forms both coal and diamonds. The difference in their structure and properties is due to the conditions under which they are formed - coal forms under low pressure and temperature, while diamonds form under high pressure and temperature.
Peat is decayed vegetation probably thousands of years old but which has not been converted to coal. Lignite is called brown coal, again vegetable matter that has not become true coal. Anthracite is a very pure form of coal much valued for steam engines.
Coal forms mostly in tropical or temperate regions because it requires abundant plant growth and slow burial to undergo the necessary transformation into coal. The Arctic region has a colder climate and limited plant growth, making it unsuitable for coal formation.
coal
coal