What do the most abundant elements in earth’s atmosphere have in common

The most abundant elements in the earth's atmosphere are;  nitrogen, oxygen and argon. What they have in common is that they are all gases.

Nitrogen is the most abundant element in the atmosphere. It constitutes about 78% of air.

The next most abundant element in the atmosphere is oxygen. Oxygen accounts for about 21% of air.

The third most abundant element in the atmosphere is argon and it accounts for 0.9% of air.

All the elements listed here are gases at room temperature.

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the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

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