Answer:
phytochemicals
Explanation:
Phytochemicals can be described as a type of chemical compounds which are produced by the plants against predators, pathogens etc. Some phytochemicals are used by humans as poison whereas others serve for medicinal purposes. Phytochemicals also reduce the risk of cancer.
In order to ward off mosquitoes, scientists will look for effective phytochemicals against the mosquitoes. These phytochemicals, when discovered can be used to treat humans and help them protect from mosquitoes.
