Pretty sure it is A. Like a sample population
Aldosterone from the adrenal gland is the answer
Answer:
Wind
Tides
Geothermal energy
Explanation:
1. Wind does not contaminate and is inexhaustible.
2. Tides are due to gravitational interaction with the Moon and Sun and the Earth's rotation, so it is classified as inexhaustible.
3. Geothermal energy is renewable because heat is continuously being produced inside the Earth, at the core.
Waters heat up and expand, causing sea levels to rise.
Answer;
C) parathyroid glands; parathyroid hormone
Explanation;
-Parathyroid glands (humans, four) are imbedded in the thyroid gland and they secrete the parathyroid hormone (PTH). So-called C cells dispersed throughout the thyroid gland, the parathyroids and thymus secrete another hormone, calcitonin. Both hormones play a significant role in the maintenance of calcium homeostasis.
-PTH, a polypeptide secreted in response to hypocalcemia raises the concentration of plasma calcium by; increasing renal calcium reabsorption, mobilizing calcium from bones by stimulating osteoclastic activity, in the presence of adequate amounts of vitamin D, stimulating the absorption of calcium from the small intestine; and lowering levels of plasma inorganic phosphate by inhibiting renal reabsorption of phosphate