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: 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: After a car accident, Carla loses a lot of blood. At the hospital, the doctors tell her that her blood pressure is now 
 Answer: decreased
[A]: If blood volume in the body decreases, blood pressure decreases.


[Q]: Question: Two species with dissimilar DNA should have a _____ relationship. 
 Answer: distant
[A]:
The more similar the DNA molecules of different species are, the closer the relationship is likely to be.