Culture and environment has been attracted many focus from mature travelers and a lot of citizens are assumed that they cannot pay enough notice on culture and environment preservation. I totally agree that there is unable to blame the visitors on protection of local culture and environment, because those visitors are varies according to number and the nature of tourists.
This intro failed to restate the background and has no a strong thesis. Let me give a try for this question:
Responsible tourists have paid attention to preserve about culture and environment.
Some people believe its impossible to pay attention. To what extent do you agree or disagree?
It is true that tourists are to pay particular attention to encourage sustainable culture and environment. While some people think that this idea seems highly dubious due to some major negative issues having to do with ecotourism, I believe that awareness about sustainable issues can be developed by controlling and managing the negative impacts on the physical environment.
Excessive amount of tourists
Excessive number of tourists
each tourists point
each point of major tourist attraction.