if a scientist is observing biotic and abiotic factors, which of the following level of organism must she be studying?                 a.  a community      b.  an ecosystem      c.  an individual organism      d.  a population

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."

a = executive branch; b = judicial branch