1. Compare the structure of the two island groups' ecosystems. First, calculate the average fish biomass in each trophic level for each island group. Then use these values to draw
biomass pyramids on graph paper. Draw the pyramids so that the levels are proportional
to the data. (Hint: Draw the smallest level first.)
reef

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."