Answer:
Mining coal is a lot like mining any other metal or ore, it's just processed differently. Oil extraction is much different because oil is a liquid, not a solid like coal. There are many different ways of extracting it because oil is found in very diverse forms such as shale, liquid oil deposits, etc
Answer:
Explanation:
MP = ( (1 - 7)/2 , (-1+-3)/2)
MP (-3,-2)
Because they have similar temperatures