Hiv/aids has devastated many different populations. efforts to reduce the spread of the disease have often focused on sexual behavior. many studies in africa have presumed that awareness of high hiv rates would lead to a change in sexual behavior – the higher the prevalence rate, the fewer risky sexual behaviors should be observed (the dependent variable). following widespread educational efforts (the independent variable), the actual change in hiv rate showed little to no change. this is an example of

Transplant operations have become routine. one common transplant operation is for kidneys. the most dangerous aspect of the procedure is the possibility that the body may reject the new organ. there are several new drugs available for such circumstances and the earlier the drug is administered, the higher the probability of averting rejection. the new england journal of medicine recently reported the development of a new urine test to detect early warning signs that the body is rejecting a transplanted kidney. however, like most other tests, the new test is not perfect. in fact, 20% of negative tests and 10% of positive tests prove to be incorrect. physicians know that in about 33% of kidney transplants the body tries to reject the organ. if the new test has a positive result (indicating early warning of rejection), what is the probability that the body is attempting to reject the kidney?

What are the benefits of strength training? write a summary of what you learned. you need at least two well developed paragraphs.

How seniors can combat health problems they may face.