All the gases are not equally heavy but they do not form different layer because of :-Effusion -Diffusion -density -specific gravity

All the gases are not equally heavy but they do not form different lay

1.	All the gases are not equally heavy but they do not form different layer because of :-Effusion -Diffusion -density -specific gravity
Answer» <html><body><p><strong><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a>:</strong></p><p>diffusion</p><p></p><p><strong>Explanation:</strong></p><p></p></body></html>