• absorb
  • amount
  • atmosphere
  • carbon dioxide
  • donate
  • environment
  • excess
  • farmland
  • food bank
  • global warming
  • gymnasium
  • habitat
  • huge
  • individually
  • oxygen
  • per
  • percent
  • positive
  • preserve
  • protect
  • reduce
  • reserve
  • respond
  • starve
  • tick
  • waste
  • worth