calcium
Water
The lungs of course
The highest concentration of mitochondria in the human body is found in muscle cells, particularly in the muscles used for endurance activities like the heart and skeletal muscles.
The highest carbon dioxide concentration in the body will be found in the tissues and cells, where it is produced as a byproduct of cellular metabolism. This carbon dioxide is then transported via the bloodstream to the lungs for exhalation.
The term mineral toxicity means a condition where the concentration in the body of any one of the minerals is abnormally high, and where there is an adverse effect on health.
The body of water which has the highest content of dissolved mineral matter is the Dead Sea. It has a salt content which is 9 times higher than regular sea water, calcium, magnesium, potassium, and other minerals.
Concentration factor in mineral exploitation refers to the ratio of the concentration of a valuable mineral in the ore to the concentration of the same mineral in the Earth's crust. It is used to determine the economic viability of mining a particular mineral deposit. A higher concentration factor indicates that the mineral is more concentrated in the ore and thus easier and more cost-effective to extract.
Infants have the highest protein needs relative to body weight of any time of life.
the dead sea is the saltiest body of water in the world.
Sea water with high salinity, low temperatures, and high pressure has the greatest density.
The highest concentration is in atmosphere. It is not on crust.
The blood in the pulmonary veins contains the highest concentration of oxygen since it has just been oxygenated in the lungs before returning to the heart to be pumped to the rest of the body.