50% chance. You can either land on heads or tails.
Exothermic reactions release heat so is in negative and endothermic is vice versa
A position statement is very similar to a thesis statement, so I would choose the third option. Remember that a position and a point of view are basically the same thing.
Alliteration is the repetition of a letter 2 or more times so the answer is B because the letter 'f' is repeated 4 times :)
