There are three main types of mutation present for DNA. They are substitution, insertion and deletion. Substitution is the exchange of one base for another. Insertion happens where extra base pairs are inserted. Deletions are mutations where a section of DNA is lost. Therefore, the correct answer is substitution.
As a rule of thumb, in order to improve the reliability and accuracy of an experiment, it is best if the experiment is repeated several times. The increased number of trials ensures that the readings observed have minimal random error.
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 />