access - n. a way of being able to use or get something

conservation - n. the protection of animals, plants, and natural resources

insecticide - n. a chemical substance that is used to kill insects

mosquito net - n. a net that is placed over something (such as a bed) in order to keep out mosquitoes

subsidize - v. to help someone or something pay for the costs of (something)

tropical - n. of, relating to, occurring in, or used in the tropics