Question: What Are the Elements in the Human Body? Answer: Most of the human body is made up of water, H2O, with cells consisting of 65-90% water by weight. 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. You may also wish to view the element composition of an average human body by mass.
1 The freezer time shown is for best quality only â foods kept constantly frozen at 0Â° F will keep safe indefinitely.  How long does cooked steak last at room temperature? Bacteria grow rapidly at temperatures between 40 Â°F and 140 Â°F; cooked steak should be discarded if left for more than 2 hours at room temperature.
However there are several factors to consider. Cut of steak, how soon it was refrigerated after cooked, your own immune system, etc. I have eaten steak left in the fridge for at least 4 days. If you are wary, then don't risk it.As for me, trial and error. Another Answer At the hospital kitchen where I work, they keep things like steak etc. a maximum of five days.They have a labeling system to keep track of when to throw it out.owever there are several factors to consider. Cut of steak, how soon it was refrigerated after cooked, your own immune system, etc. I have eaten steak left in the fridge for at least 4 days. If you are wary, then don't risk it.