. Air pollution
Koh Kred is an area that has limited geography for the use of cars, thus, water transport and motor-bikes are the main transportation for residents and tourists. Due to the increasing number of tourists it supports, there has been an increase in the need for using the local transport to travel around Koh Kred. Regarding the study, a major source of air pollution of Koh Kred is associated with the transport for locals and tourists. Motor-bikes and motor-boats contribute to local atmospheric pollution through the release of carbon dioxide, which is widely thought to be a major cause of global warming