When creating rigidity in the torso, which of the following involves expiring against a closed glottis, combined with contracting muscles of the abdomen and rib cage?

How does a bone marrow transplant treat sickle cell disease?

Which health risk is associated with tanning beds

In the category column, classify the following activities as either health promotion or health protection. if any of these actions fall under both the categories, write both. in the reason column, write down your reason for making each classification.