There are both positive and negative effects of tourism. One positive effect is that jobs are created. Tourists bring money to the economy. Roads, airports, golf courses, shops, hotels and restaurants, etc. need to be built. All of these things will give many people jobs.
A negative effect of tourism is the depletion of natural resources such as water. Pollution such as litter, sewage, and air pollution are all concerns. Ecosystems may also be altered to the depletion of habitats for building. In addition, beaches are often transformed into tourist destinations (including marinas) which harms or eliminates these habitats as well.