Answer:
its : What goes around comes around!
B. The explanation structure is incorrect making the sentence sound very jibberish.
improve upon (I got this on USA Test Prep)
Adverbs typically end in -ly but in this case the word should be "too"
Answer:
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
Explanation: