Which three factors limit descriptive and comparative investigations? O A. The way you must write hypotheses B. The number of variables you can have I C. The number of observations you can make D. The features of objects that you cannot see E. The amount of time or money required.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.