The carbon cycle has several sources including all of the following except
a. nitrogen
b. animals
c. sediment
d. plants

materials water oxygen those are the things i can think of in this moment.

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."