Once the paper is graded, please share the information with us. (pre-sharing may trigger anti-plagiarism algorithms, even though it's obviously your work).
Also, we may be able to guide you better if we know the nature of the class. For example, if it's a class on the relationships between humans and plants, then definitely focus on the kavalactones, because the more primitive forms of kava (the "wichamanii" types) are very low in kavain, whereas the highly cultivated kavas, including all those distinct to Hawaii, are very high in kavain. Whereas natural selection doesn't have an end-goal in mind, artificial selection usually does. It's why the cavendish cultivar of banana is almost unrecognizable compared to it's wild progenitor, which Thomas Hobbs declared to be "poor, nasty, brutish, and short" upon eating one. The question I often as is... did those pioneers who started the cultivation process know what they could do, and if so where did that knowledge come from? (Probably not - probably people were cultivating "two day" kava and discovered clonal mutant lines that happened to be "cleaner," and through artificial selection those became more highly prized, but why destroy a beautiful myth with Occam's razor?)