Answer: Hindu caste system was kinda strict. You couldn't move up at all in the caste system.
C) ADH
<span>ADH (Antidiuretic Hormone) The brain and kidneys regulate the amount of water excreted by the body. When the blood volume is low, the concentration of solutes in the blood is high. When the hypothalamus senses this low blood volume and increased serum osmolality it synthesizes ADH, a small peptide molecule.</span>
The relationship of latitude to climate zones is due to solar radiation which is greatest near the Equator and lesser moving to the poles.