hiililähde

Hiililähde refers to a source of coal, which is a combustible black or brownish-black sedimentary rock formed from ancient vegetation. Coal is primarily composed of carbon, along with variable quantities of other elements, notably hydrogen, sulfur, oxygen, and nitrogen. It is classified into four main types based on its carbon content and the degree of transformation it has undergone: peat, lignite, bituminous, and anthracite. Each type has distinct properties and applications.

Coal is a significant energy resource, used primarily for electricity generation and as a fuel for industrial processes. Its extraction involves mining methods such as surface mining, underground mining, and mountaintop removal. The environmental impact of coal mining includes habitat destruction, water pollution, and greenhouse gas emissions, contributing to climate change.

The global demand for coal has been declining in recent years due to increasing concerns about environmental sustainability and the growing availability of alternative energy sources like natural gas, renewable energy, and nuclear power. However, coal remains a vital energy source in many parts of the world, particularly in countries with large coal reserves and limited access to cleaner energy options.