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Most of the time the FRQ can have many answers and the people that grade our exams obviously realize that, so there is not one definite answer for some of them and may consider other answers. I just based the answers from the original article that I found. Also, it can be “sus” because it’s their acronym. It literally means “Both appear in the Red List of threatened species published by the ‘Union Mundial de Naturaleza’, IUCN according to their acronym in English, which includes other 16,000 species of the planet.” You could go either way, “IUCN according to the acronym in English.”</p>