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How Coal is Formed
1:23
YouTubeMr Cognito
How Coal is Formed
Coal is a natural resource that has had a massive and profound impact on the development of our society. We dig it out of the ground in its black or gray state, but how did coal form? It took dead plants, heat and pressure, and millions of years Music: River of Io Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4 ...
已浏览 20.1万 次2022年6月23日
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