a major point of understanding natural selection is that not at all organisms in a population get to reproduce. Consider the term fitness as used in biology. how does this term relate to natural selection?

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.

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it's made from mineral oil