Pretty sure Bio isn't as hardcore as chemistry.
Perhaps you may see Chemistry has a more difficult subject than Biology, but I had this discussion with my friends the other day.
If you are naturally gifted with scientific sense, you don't need to put in as much effort into chemistry as it is a conceptual thing and the way you phrase your answers is important.
Hence, the effort required varies in Chemistry.
I don't do bio but I've heard, its mostly memorising. Hence, you could say there is a benchmark which
everyone needs to reach in study in order to do well since it's majorly rote-learn from what I've heard.
So, you can say that biology people may have the short end of the stick compared to people in chem and physics, as sometimes you get those naturally smart people who just ace those two subs without much effort.
btw hutchoo...just wondering...aren't you in year 10?
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And, Chromeo, of course you can do those subjects! If you like them or need them, then go for it and put in the effort (not like I can talk lol, but yes).