Which structures deliver blood to the heart from the body?

Blood Vessels, I believe.

I think that it'll be the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium.

Explanation: Because, the pulmonary vein empties oxygen-rich blood, from the lungs into the left atrium.

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."