The thyroid scan and thyroid uptake provide information about the structure and function of the thyroid. The thyroid is a gland in the neck that controls metabolism, a chemical process that regulates the rate at which the body converts food to energy. top of page.
The mask, dubbed Triton, acts like a fish gill to extract oxygen from water so that the user can keep on breathing while under the sea. The scaly texture on the arms conceal small holes in the material where water is sucked in.
Disolving Oxygen Into Pond Water. The physical nature of water puts limitations on how much oxygen we can expect our pond water to hold. It also sets targets for what we should expect to achieve under different pond conditions. In the air we breathe, there is approximately 21% oxygen (210,00ppm oxygen).In any natural water body, we will typically find less than 1% dissolved oxygen. So tiny are the concentrations of dissolved oxygen in pond water, that their levels are measured in milligrams per litre or parts per million (ppm).For example 3 milligrams of oxygen dissolved in a litre of water equates to 3 ppm.t also sets targets for what we should expect to achieve under different pond conditions. In the air we breathe, there is approximately 21% oxygen (210,00ppm oxygen). In any natural water body, we will typically find less than 1% dissolved oxygen.