Checkpoints occcur between the stages of the cell. cycle if a cell does not meet. certain criteria at the end of a stage it will not move to the next stage wich of these occurs just before the cell enters the G2.stage of the cell cycle

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.

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.

to this answer it would be edge enhancement

answer///malignant melanoma;