Amazing mini documentary about Insects 300,000,000 Years Ago

Hi steemians . I wanted to share this video with the community and share our opinions after watching this video about insects that existed million years ago in our lovely planet.
This video tells us that insects and living creatures of that time were more deadly then those that we have nowdays and the reason behind is the oxygen.
It goes like this ( the higher the oxygen the higher the size of the living creatures ).
Now before you say "bullshit" please take some time to watch the video and you will be amazed.