instruction:
In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
question:
Question: Theresa increased the amount of water in her pool. Rock would likely melt 
 Answer: faster
answer:
As the amount of water increases, the melting point of rock decreases.


question:
Question: Mike is watching how particles of reactants function, and sees that they are very far apart. Considering that the concentration of them is very low, the chance of them colliding together is 
 Answer: low
answer:
At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.


question:
Question: Since Kim has less melanin than Jennifer, when they lay out in the sun Jennifer's skin is _____ than Kim's. 
 Answer: darker
answer:

However, the melanocytes of people with darker skin produce more melanin.