I think the effects of tourism, and there are a variety of services. The product is a product that handles tourism. The service is not able to control the behavior.
I think that the effects of tourism products and services have a variety of forms. Tourism products are not tangible products. The service could not control the behavior they had observed.
I think the special characteristics of tourism and services have a variety of forms. Tourism product is intangible products The service cannot control the behavior, for example.