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.
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Question: Question: Ares has a rock of with a surface area of 10 meters squared and a rock with a surface area of 1 meter square. The _____ rock likely has less area affected by a chemical reaction 
 Answer: 1m

Answer: Surface Area of Reactants When a solid substance is involved in a chemical reaction, only the matter at the surface of the solid is exposed to other reactants. If a solid has more surface area, more of it is exposed and able to react.


Question: Question: In ancient times, there was worse medicine. This means there was a _____ death rate. 
 Answer: higher

Answer: More recently, the death rate has fallen because of the availability of more food and medical advances.


Question: Question: Do electric cars pollute more or less than gas cars? 
 Answer: less

Answer:
Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.