Question

pangaea phosphorus carbon nitrogen oxygen choose your answer... choose your answer... fill in the blank 2 points makes up the largest portion of earths atmosphere.

Explanation:

Nitrogen makes up about 78% of Earth's atmosphere, which is the largest portion among the given elements. Oxygen is about 21%, carbon is a trace gas in the atmosphere, phosphorus is not a major atmospheric component, and Pangaea is a super - continent, not an atmospheric element.

Answer:

Nitrogen