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0.0005% in the atmosphere; Used for lifting in balloons and airships, and as a cooling medium.

Approximately 0.00017% in the atmosphere; Potent greenhouse gas, also used as a fuel.

About 0.04% in the atmosphere; Greenhouse gas, necessary for photosynthesis in plants.

78.08% in the atmosphere; Essential for the formation of amino acids in plants and animals.

About 0.000055% in the atmosphere; The lightest element, it can be used as a fuel.

0.000114% in the atmosphere; Used in lighting and photography.

0.0000087% in the atmosphere; Used in light bulbs and medical imaging.

0.0018% in the atmosphere; Used in lighting and high-voltage indicators due to its glow.

20.95% in the atmosphere; Vital for respiration in animals and oxidative processes in the environment.