Answer:
a. lethargy, weight gain, cold extremities, and constipation
Explanation:
Caused by a decrease in thyroid hormone T3 (triiodothyronine) and T4 (thyroxine) production, hypothyroidism can lead to fatigue (lethargy), weight gain, cold intolerance, constipation, skin dryness, thinning hair, increased rates. cholesterol and menstrual flow, plus infertility and depression. These symptoms are not always all present, which makes it necessary to research thyroid dysfunction in front of any of them.
Although the reason has not yet been discovered, diseases caused by thyroid malfunction are more common in females. In addition, the risks increase with age. Thus, endocrinologists advise women over 40 in particular to have their thyroid self-examination periodically.
Radioactive dating can determine the age of minerals and fossils in each layer of rock.
Explanation:
Radioactive dating is the most commonly used geological method to determine the age of rocks and fossils layered in the layers of rock on the basis of their natural radioactive decaying.
With the help of the known rate of radioactive decay of isotopes, different types of radiometric dating are done depending upon the material found in the rock layers, like uranium-lead dating or potassium-argon dating.
Radiocarbon dating helps to record organic content in rocks like bones, shells, etc. Age of fossils sediment over sedimentary rocks is determined by combining with the bracketing method.
Answer:
Because these organs excretes mucus, spit, cough, etc. as waste product .
Explanation:
Nose and mouth are also called excretory organs. why?
