Answer:
without choices to choose from, I'd say vaccinations....also herd immunity, and early health screenings.
The answer to what you're asking for would be C.
Answer: A 24-hour national web-based and telephone helpline. Chat, text, and call services.
Answer: d
The respiratory and circulatory systems bring oxygen and nutrients to the cells. The respiratory and circulatory systems work together to maintain homeostasis. The respiratory system moves gases into and out of the blood. The lungs contain the bronchi, bronchioles, and alveoli.
Explanation:
