Mary was in a terrible car accident. When the emergency personnel arrived, they noticed she had significant blood loss. What was their concern about her blood pressure?

the answer is b.) hydrogen bonds between bases.

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."