What term means the spontaneous loss of a pregnancy 20 or more weeks after the pregnancy began?

The answer for this is miscarriage, coming form the word "carriage" since the mother is carrying the baby, and "mis-", a prefix that negates what comes after it. It basically means "a confirmed pregnancy that failed." It is completely natural and happens to many women, regardless of their health, age, and other factors.

Magnesium! this is found if caves usually

The answer would be true.