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: Two small suns moving closer will have _____ gravitational force between them than two large suns. 
 Answer: less
[A]: The greater the mass of the objects, the stronger the gravitational force of attraction between them.


[Q]: Question: A flu vaccine was administered to residents in a large city and the vaccine was effective in lowering the risk of flu among the residents. This means that the lower risk of disease resulted in a 
 Answer: lower death rate.
[A]: With better food and less chance of disease, the death rate fell.


[Q]: Question: When the villagers are dying sooner, the food source is likely 
 Answer: small
[A]:
More recently, the death rate has fallen because of the availability of more food and medical advances.