can someone please tell me..., page-26

  1. 1,089 Posts.
    Can someone tell me why

    We have suffered from cancer and respiratory problems like asthma for 1000s of years of recorded history

    Over the last 100 years we have doubled our life expectancy and population has gone through the roof

    We are digging up coal at a frantic pace

    We convert back to carbon dioxide if oxygen is present, or methane if not.





 
arrow-down-2 Created with Sketch. arrow-down-2 Created with Sketch.