It is a parasite for humans because it remains dormant in the carrier organism which in this case is the mosquito. When the pesticides use for mosquito is decreased,the mosquito population increases which exposes the human population to the risk of being infected by plasmodium. herbicides are the chemicals that are designed to kill the unwanted herbs. these chemicals contain harmful elements that can cause the other aquatic life to die as well. one effect of the herbicide is that it deprives the water of oxygen which is essential for the fish and other animals living the lake.<span />
