Well,since alot of waters have been polluted due to people being irresponsible and smoke from factories, it made alot of consequences like killing sea creatures( for Example: trouts,shrimps,...) and also for human's life. There are some cases where there are people who lived to catch fish, so when the water is polluted and the fishes were being killed, the people who necessarily needs fish can not live.There were also cases where rivers and lakes where polluted with human trash,so when the polluted rivers transmissions to the sea,the sea would also be polluted and once they got polluted, when human beings swim in the sea, the polluted sea would harm the human's health if they swim, it could even lead into many illnesses and even death.

In order to prevent this and stop this situation happening, every citizen in the world should cooperate in keeping the water fresh and clean instead of throwing litters into the water. We all should throw the litters correctly in the bin, and if there aren't any bins around you and you have or saw a litter, you should kept the litter for a while and try to find a bin. If there are bins that divides which kind of litter you should throw then you should listen and throw the correct litter that the bin told you to throw( for Example:If there is a bin that tells you to throw paper into it only then you should liten to it and throw any litters that involves paper).You can also recycle or reuse some items that you no longer using them like Water bottles,you can create the bottles into crafty items instead of immediately throwing the litters into the trash can. In public, when it comes to transportation then you should avoid using vehicles that leaves out smoke or oils and use vehicles like bicycles or just go on foot. And also we could convince others to cooperate in changing too.