Question

Both petroleum and Cole 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 micro organisms. 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.
This passage uses a combination of comparison and contrast and...


A. Examples and explanations

B. Supporting details

C. Cause-and-effect

D. Chronological order

Answer 1

After reading the passage represented above I can clearly see what author uses besides combination of comparison and contrast. According to the main structure of such type of text, comparison and contrast method usually comes with C. Cause-and-effect to support pros and cons reasonably. So, the correct answer is the third option from the scale attached above.