These sayings are based on close observations, and most likely have some truths in them, but they are not based on the scientific method.
-Earth's second atmosphere was more dense than its first atmosphere (which formed some 4.6 billion years ago),and developed through the impact of a series of meteorites.

Question

Quizplus · Accepted Answer

This statement is based on scientific evidence and is supported by the current understanding of Earth's early atmosphere.

These Sayings Are Based on Close Observations, and Most Likely