Question

4 5 6 بلی نے چوہے کو پکڑ لیا۔ ہم سب نے مل کر کھانا کھایا۔ شادی میں شرکت کی گئی ۔ استاد نے بچوں کو پڑھایا۔ مالک نے نوکر کو ڈانٹا۔ لوگوں نے کلاس میں شور مچایا ۔ 7 8 9​

Answer 1

Answer:

Continued burial, resulting in increasing pressures and temperatures, causes this low quality lignite coal to be transformed into higher quality "black coals". First lignite becomes sub-bituminous coal, then bituminous coal, and finally the highest quality anthracite coal. As these transformations occur, the amount of water and other compounds in the coal decreases and the coal becomes more dense. Along with this comes a higher carbon concentration.