Congratulations,
I am super proud of you as you have won the scholarship. I hope that you will enjoy what comes from it. During the duration of studying I hope that you make memories and that this is everything that you have hoped for.
the answer is comparison and contrast; cause and effect. In the beginning, the author is giving differences and similarties between petroleum and coal,
which you can see from this sentence :
. . .<span><em>Both are vital sources of energy for the modern world and both </em> . . . .
</span>. . .<span><em>However, petroleum was mainly formed from the remains of ocean-dwelling microorganisms.</em> . . .
After that, the author moves the discussion into talking about the cause and effect of each.</span>
i dont understand, is this supposed to be a question?