Evidence from countries that continued using DDT showed that correct and timely use of indoor spraying can reduce malaria transmission by up to 90%. In the past, India was able to use DDT effectively to substantially cut the number of malaria cases and deaths.
It also was effective for insect control in crop and livestock production, institutions, homes, and gardens. DDT's quick success as a pesticide and broad use in the United States and other countries led to the development of resistance by many insect pest species.
Two identical cell because the main purpose of the cell cycle is to make two identical cell.
Answer:
The answer is option 2. Contraction of the ciliary muscles.
Explanation:
The ciliary muscles surround and hold the lens in place. The ciliary muscle is a essential part of the eye that contribute to vision. They control near and far vision. In near (i.e to see closer object) vision they contract to thicken the lens (relaxes to a more curved shape). This increases the refractory power to accomodate for viewing of close object.