Question

---------- , --------- and ----------- are higher grades of coal than Ignite ​

Answer 1

Answer:

Here is your answer

Explanation:

subbituminous, bituminous and anthracite are higher grades of coal than Lignite.

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Answer 2

Answer:

The four ranks are: Anthracite: The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter. Bituminous: Bituminous coal is a middle rank coal between subbituminous and anthracite.