No algae is a biotic producer now a bio fuel reactor could turn that algae into power but it’s just not efficient enough for 21 century standards, right now nuclear power seems to be the future and it is very clean and effective
The correct answer is the last one, the cyclops is compared to a mast because of his size. The comparison means that even laid down the cyclops standed out among his sheep, like a mast does at sea. As for the first two options, the cyclops is not compared to Zeus in any moment.
A. Interrogative, question mark. "Have you ever been to North Carolina?" is a question, hence the question mark. If one is being interrogated, he or she is being questioned.