When a molecule of nad��� (nicotinamide adenine dinucleotide) gains a hydrogen atom (not a proton), the molecule becomes; a) dehydrogenated.; b) oxidized.; c) reduced.; d) redoxed.; e) hydrolyzed.

acceleration = 18/3 = 6 m/s per second.

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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.