Answers

2015-06-27T18:18:41+08:00
Astronomy is one of the hardest topic to study with. (in my opinion)
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2015-06-28T15:44:18+08:00
All of the branches of science I may say are all easy because they are all about concepts but when you add up some math to spice it up, then it what makes it hard. Chemistry and Physics always make my head go bang but quantum physics is interesting.

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