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%)
For example the kidney secretes endocrine hormones such as erythropoietin and renin. The endocrine system is made up of a series of glands that produce chemicals called hormones. A number of glands that signal each other in sequence is usually referred to as an axis, for example, the hypothalamic-pituitary-adrenal axis. 11 people found this useful.