Help with geography project on national parks?

can i have some help please? i'm having trouble with the last paragraph. i've got to suggest possible solutions to the problems tourists cause in the lake district (e.g. litter, soil erosion, over-crowding) and include a description of other locations where the suggested solutions have been tried, tested, and proved successful. (i.e. other national parks) thanks so much - i'd really like this finished by lunchtime. x