I believe the answer would be d.muscle cramps. Breathing in toxins seems like it could relate to the other three answers.
The drug that increases activity is cvs
Answer:
physical:
Swimming.
Cycling.
Using an elliptical trainer.
anaerobic:
high intensity interval training (HIIT)
heavy weight lifting.
calisthenics, like plyometrics, jump squats, or box jumps.
Explanation:
Answer:
This is called Chronic obstructive pulmonary disease (often called "COPD")
Explanation:
COPD is a condition in which the airways in the lungs become inflamed and narrowed and the air sacs become damaged. Smoking cigarettes is the most common cause of COPD
Hope it helps :)
A. long, appendicular skeleton
