Identify two molecules that are responsible for stem cells that all start out identical

a = executive branch; b = judicial branch

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate

plants absorb water from the soil by osmosis. root hair cells are adapted for this by having a large surface area to speed up osmosis. the absorbed water is transported through the roots to the rest of the plant where it is used for different purposes: it transports dissolved minerals around the plant.