Answer:
Carbohydrates can be divided into two main types: simple and complex. Simple carbohydrates are made up of just one or two sugar units, whereas complex carbohydrates are made up of many sugar units.
There are two oxygen atoms
Crystals of hydrated magnesium sulfate used as a purgative or for other medicinal use
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It's keeps its size and shape because against the outward pressure of fusion energy by the force of gravity