I'm not one that's into Biology, honestly. The easiest things for me to understand in it, though, were plants..however, I don't recall half of it. The last time I had anything with biology in school was 7th grade. xD
I've been told various things about my voice. "Your accent is annoying." "You sound like you're 4." "You sound like you're 8." "Who the hell let the kid in?" "Your beautiful voice brings a smile upon my face." "I love your voice." xD, I personally find it very annoying.
Nope, nope, nope! What's secret stays secret! :P
I've been having stomach aches a lot for the past 11 years of my life. Sometimes I don't have them a lot, though, but other times I get them like crazy. They'll wake me out of my sleep. As for my headaches, I've been having headaches daily (with the slight exception once every so month) for around 2 years. -.-