The final and most important step â designing the ad. After you created the campaign and fine tuned the settings, move to the ads level and hit Edit next to an ad. First, you will be asked to select the destination for your ads: your Instagram account and your Facebook page.
Confidence votes 1.5K. Carbon is actually the most common element in our body (in any living organism). Apart from carbon, oxygen, nitrogen and hydrogen are present in considerable amounts. 4 people found this useful.
Answer: Most of the human body is made up of water, H 2 O, 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  Oxygen (65%). 2  Carbon (18%).