I guess it was pretty easy but my favourite subjects weren't there like evolution and natural selection. Tbh most of the subjects I didn't really revise came up, like mutualism. I wrote abou the oxpecker, smaller fish and nitrogen-fixing bacteria but i didnt say oxpecker and herbivore so I don't know if I'm getting a mark for that :/ also what was the answer to the question about the amount of energy lost between the oak tree and caterpillar? i wrote 80% but most of my friends wrote 92%