An organic carbon compound is contaminating a groundwater aquifer. It is biodegradable under both aerobic and anaerobic conditions, but the oxygen in the groundwater has been depleted. According to thermodynamics, which electron acceptor will be most favorable for growth of microorganisms on this organic compound

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.