Added: 3 years ago
From: cpiweb
Views: 532
Sort by time | Sort by thread (beta)

Link to this comment:

Share to:
see all

All Comments (4)

Sign In or Sign Up now to post a comment!
  • WE NEED C02, the more the better.

    What was the most productive (in terms of evolution) period in scientifically observed history?

    The Cambrian Period saw the evolution of the Eye, and had more C02 in the atmosphere than today (today: 390ppm, Cambrian: 7000 ppm), AND during that period, the temperature was just as it is today.

  • Great guy!!

  • Sick guy.

Loading...
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more