Why forests are known as "THE GREEN LUNGS OF THE EARTH" Share with your friends Share 0 Mushtaq Ahmed answered this Kindly refer the link https://www.meritnation.com/ask-answer/question/why-are-forests-called-lungs-of-the-earth/forests-our-lifeline/6267128 0 View Full Answer Pranav Srivatsav answered this forests are known as green lungs o earth because they maintain the balance of co2 and o2in the atmosphere.hope i helped you if you think i helped you,thumbs up 0