Brainiest! what might happen to the sand in the valley if more sand is deposited on top of it? make it 2-3 sentences, this is very appreciated! i will give the brainiest and quite a few points if you answer it like i asked.

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When sand is already present in a valley and more sand is deposited on top, it becomes a sand dune. As more sand is deposited, the dune gets bigger. Slowly but surely, the sand fills up the valley, until the valley is non-existent, but level to the ground.

the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue