ANSWERS: 2
  • Of the land area: ~20% is covered in grass. ~29.6% is covered in trees. Sources: http://www.earthrestorationservice.org/page/87/grassland.htm http://www.ecology.com/feature-stories/quiet-evolution-of-trees/index.html I hope this helped.
  • If you watch Plant Earth with David Attenborough, he'll tell you that fully one third of the land mass is covered in grass, one of the most hardy plants.

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