Pelvic inflammatory disease is the most likely cause in 99% of studies on this matter
It's when people have trouble sleeping and it can get into their health and cause bigger problems but it mostly occurs in women but not really in men
Answer: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:
Answer:
alveoli
Explanation:
because carbon dioxide moves from the blood in the capillaries to the air in the alveoli
