the higher up in altitude you go.


Senior Member
Of greater importance than the slight reduction in gravity’s pull is the so-called thin air that is present at high altitudes. Although air contains the same proportions of oxygen, nitrogen, and other gases at high altitudes as at sea level, in a similar volume of air there is less of each the higher up in altitude you go.

The green part. What grammar function is the green in here? Thank you.
  • Eric Chengdu

    Senior Member
    That makes me think of the commonly used expressions like "the more, the better" "the sooner, the better". I think "the less...the higher" has the similar structure to show proportionate increase or decrease.
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