1.

coal is fossil fuel and it cannot be preapared in the laboratory or industry because the formation of coal. 1 is a low process. 2 need veey low pressure and low temperature. 3 need veey high pressure and high temperature 4 causes air pollution. select the correct optuon. a 1&2 only. b 2&4 only. c 1&3 only. d 3&4 only

Answer» 1 & 3
It was SLOW not LOW


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