Why is it possible to get the flu during the flu season when you have already been vaccinated for influenza?

At which location in earth’s interior does the top density continue to increase as thickness decreases?

How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?