The agency monitors the need for vaccinations for infectios disease is the Center for Disease Control or CDC
The base line fitness test is used to determine your current fitness level...true
Answer: your answer is A. The quality of air and water at places where people live,work, and go to school.
Explanation: environment is a where people live together.
Answer: B
Explanation:
After a muscle fiber is stimulated by a nerve signal, a release of stored calcium ions leads to muscle contraction.
Common electrolytes include sodium, chloride, magnesium, calcium and potassium.
Sodium and potassium help in the generation of nerve impulses while calcium aids muscle contraction. Sodium is also actively involved in the movement across cell membranes.
Environment, health and population are interrelated.