What is air pressure? how is it measured?

There are six elements that make up most of the human body. which of the following is not one of these six elements?

What is the cause hearing loss in human being

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.