Answer: to be a pog champ
The thyroid gland regulates the body's metabolism (through T3 and T4) and also affects the metabolism of calcium through the production of calcitonin, which reduces calcium concentration of the blood.
The parathyroid glands, which are located within the thyroid gland, also affect the metabolism of calcium by producing parathyroid hormone PTH, which increases calcium concentration of the blood.
The appropriate answer is d. gases such as carbon dioxide and methane. These gases are known as greenhouse gases and they trap heat in the form of infrared radiation. Without this effect the earth would be 30 degrees cooler. Nitrogen dioxide and sulfur dioxide are examples of other greenhouse gases. An increase in the volume of these gases is responsible for present day global warming that is causing a change in the the earth's climate.
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