Sound travels fastest through a) space. eliminate b) cool air. c) warm air. d) a metal spoon.

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."

answer: b

coz red blood cells marrow and circulates the body for 120 days.