AP BIOLOGY

Detailed explanation-1: -The human body loses water primarily by excreting it in urine from the kidneys. A fair amount of water is lost daily when water evaporates from the skin in form of sweating and some of it is breathed out by the lungs.

Detailed explanation-2: -The liver breaks down excess a mino acid s and toxins in the blood. The skin eliminates excess water and salts in sweat. The lungs exhale water vapor and carbon dioxide.

Detailed explanation-3: -The kidneys are the part of the urinary tract that makes urine (pee). Urine has salts, toxins, and water that need to be filtered out of the blood. After the kidneys make urine, it leaves the body using the rest of the urinary tract as a pathway.

Detailed explanation-4: -Water is lost from the body as: urine from the kidneys. sweat from the skin. water vapour, from the lungs when we exhale.

Detailed explanation-5: -The main waste gas excreted by the lungs is carbon dioxide, which is a waste product of cellular respiration in cells throughout the body. Carbon dioxide is diffused from the blood into the air in the tiny air sacs called alveoli in the lungs (shown in the inset diagram).