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.

Q: Question: If Mona is creating a reaction using solid reactants and she decreases the surface area of those reactants, what happens to the reaction rate? 
 Answer: decreases

A: Therefore, increasing the surface area of solid reactants increases the reaction rate.
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Q: Question: If Jim begins emitting more greenhouse gases into the air it means that the air will become 
 Answer: warmer

A: More greenhouse gases trap more heat and warm the atmosphere.
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Q: Question: Lizzie visited a village where no predator wiped people out. The population got 
 Answer: larger

A:
An increase in predators, the emergence of a new disease, or the loss of habitat are just three possible problems that will decrease a population.
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