Why is there only 21% oxygen in our atmosphere?
Oxygen is one of the most important things for LIFE!
What happens when plants or animals live in an atmosphere that has a higher level of oxygen. You will be amazed at some of the results.
Thanx to
GeoShifter
https://www.youtube.com/channel/UC0XiBExIuQxU--3hyVciZ9A
My video is at DLive