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: An object with a lesser mass than another will have _____ momentum. 
 Answer: less
answer:
An object has greater momentum if it has greater mass, greater velocity, or both.


question:
Question: As more people are removed from Earth, they will find _____ water scarcity. 
 Answer: decreasing
answer:
Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.


question:
Question: Eric added more and more reactants to his mixture. The reaction rate will now be 
 Answer: faster
answer:

Therefore, increasing the surface area of solid reactants increases the reaction rate.