İam pretty decent. Which year group are you in??
After a thorough research, there exists the same question with the paragraph.
<span>Both petroleum and coal are made up of complex carbon-based molecules, and both originated with living creatures of some kind. Both are vital sources of energy for the modern world and both were formed by geologic processes over millions of years. However, petroleum was mainly formed from the remains of ocean-dwelling microorganisms. Coal, on the other hand, originated from decayed vegetation in ancient swamps and bogs. In any case, it took millions of years for both coal and oil to be produced. This is the case because it took that much time for overlying sediments to produce the unimaginable heat and pressure that would one day allow us to harvest these energy resources.
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The paragraph uses 'Compare and Contrast' organization. It presented us the differences and similarities between coal and petroleum.
A comma indicates a pause between the ending of an introductory word, phrase, or clause, and the beginning of the main part of the sentence.
# A comma is used before any coordinating conjunction (and, but, for, or, nor, so, yet) that links two independent clauses. ....
#It is also used after a dependent clause that starts a sentence. ...
#Commas also used to offset appositives from the rest of the sentence. ...
#They are used to separate items in a series. (this is the most commonly used)
