Question

which gas is most abundant in the atmosphere today? * carbondioxide oxygen nitrogen helium carbon dioxide is a green house gas that helped warm the planet so life could develop on earth true false

Explanation:

The Earth's atmosphere is about 78% nitrogen, making it the most abundant gas. Carbon - dioxide is a greenhouse gas but its abundance in the atmosphere is much lower compared to nitrogen. While it plays a role in warming the planet, it did not solely "help warm the planet so life could develop" as other factors were also involved.

Answer:

1. C. Nitrogen
2. False