Step-by-step explanation:
At a depth of 40 meters, a scuba diver will have more nitrogen dissolved in their bloodstream compared to a depth of 10 meters. This is because the increased pressure at greater depths causes more nitrogen to dissolve in the bloodstream and tissues of the diver's body. Nitrogen is a gas that is present in the air we breathe, and when diving, we breathe compressed air that contains a higher concentration of nitrogen than at sea level. As a diver descends deeper, the pressure increases, which causes more nitrogen to dissolve in the bloodstream. This is why it is important for divers to follow proper decompression procedures to allow their bodies to eliminate excess nitrogen safely.