The depth to which grass roots will go in sandy soil: at least two feet. He knew better than she the depth of Solomon White's commitments. He was not tall, but there was unusual breadth and depth to his shoulders. Then the Flying Fish folded her wings and sank to a depth of twenty feet.
Therefore, it isn't surprising that most of a human body's mass is oxygen. Carbon, the basic unit for organic molecules, comes in second. 99% of the mass of the human body is made up of just six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Oxygen (65%) Carbon (18%) Hydrogen (10%) Nitrogen (3%) Calcium (1.5%)
Your muscles, hair, nails, skin and eyes are made of protein. So are the cells that make up the liver, kidneys, heart, lungs, nerves, brain and your sex glands. The body's most active protein users are the hormones secreted from the various glands -- thyroxin from the thyroid, insulin from the pancreas, and a variety of hormones from the pituitary -- as well as the soft tissues, hard-working major organs and muscles.