The mark scheme penalises “assertion without reasoning”. For example: “Climate change is bad.” That’s an opinion. A Level 5 answer adds: “This leads to rising sea levels, as seen in Tuvalu, which forces relocation – raising ethical questions about climate justice.”
:
Mark schemes are copyrighted by Cambridge International. Publishing a "long article" that reconstructs, explains, or distributes substantial content from that PDF would breach their intellectual property rights. 7707-s21-ms-21.pdf
Find a copy of the corresponding question paper ( 7707-s21-qp-21.pdf ), practice a 90-minute writing session, and then immediately cross-reference your work with 7707-s21-ms-21.pdf . You will be shocked at how quickly your marks improve. The mark scheme penalises “assertion without reasoning”