Ecotourismisacombinationofecology(thestudyofsystemsofli...
问题详情：Ecotourismisacombinationofecology(thestudyofsystemsoflivingthings)andtourism.Itis___51___“responsibletraveltonaturalareasthatpreservestheenvironmentandimprovesthewelfareofthelocalpeople”byth...