Examlex
Discuss the evolution of birds as it is currently understood.Why would some theropod dinosaurs have feathers? Did feathers evolve just once? Did feathers evolve specifically for flight? Is Archeopteryx really a bird?
K
The chemical symbol for potassium, a soft, silvery-white metallic element, essential in the human diet and various industrial applications.
K
The chemical symbol for potassium, an essential mineral and electrolyte involved in nerve function and fluid balance.
[Cl-]
The chloride ion, a chlorine atom that has gained one electron to achieve a stable electronic configuration, commonly found in salt compounds.
HAc
A common abbreviation for acetic acid, a weak organic acid with the formula CH3COOH, known for its sour taste and pungent smell.
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