1.Water pollution happens due to the contamination of the water.
>> Water pollution happens because the water is contaminate
2.Changes in water temperature can result in the death of aquatic animals.
>>Changes in water temperature can make the aquatic animals dead
3.There are too many billboards on the road. People are tired of looking at them. (make)
>> The sight of the road make people tired of looking at them.
4.Chemical wastes are treated poorly. Therefore, the water is polluted.
>>If chemical wastes aren't treated poorly, the water wouldn’t be polluted.
5.We don’t care for the environment. Therefore, there are many types of pollution
. >> If we cared for the environment, there there aren't many types of pollution .