Food and water.
-protein
-carbohydrates
-fat
Polio destroys motor neurons specifically. The question came with no "Which of these options"
Answer:
periosteum
Subchondral tissue.
The tough, thin outer membrane covering the bones is called the periosteum. Beneath the hard outer shell of the periosteum are tunnels and canals through which blood and lymphatic vessels run to carry nourishment for the bone. Muscles, ligaments, and tendons may attach to the periosteum.
Psychological is the word you're looking for.
Answer:
The development of antibiotics and immunizations
Explanation:
