What does it mean when you have a high white blood cell count?

Since white blood cells fight off infection, people tend to think that elevated levels are actually beneficial. This is not necessarily the case! A high white blood cell countisn't a specific disease, but it can indicate another problem, such as infection, stress, inflammation, trauma, allergy, or certain diseases.

Your answer is  d.)relationship between pressure and air volume and led to the understanding of how respiration works