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  • established
    student's answer
  • to lessen the environmental impact
    student's answer
  • to do harm to sth
    student's answer
  • a range of sth
    student's answer
  • to make a difference to sth
    student's answer
  • a growing number of (sb)
    student's answer
  • environmentally friendly
    student's answer
  • to show concern for sth
    student's answer
  • to see through sth
    student's answer
  • a tour operator
    student's answer
  • to implement a measure
    student's answer
  • to apply sth to sth
    student's answer
  • rebellious
    student's answer
  • the overuse of natural resources
    student's answer
  • a range of sth
    student's answer
  • to seek out sth
    student's answer
  • to set a good example for others to follow
    student's answer
  • a controversial issue
    student's answer
  • the public's awareness of sth
    student's answer
  • to be conscious of sth
    student's answer
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