(i) Social responsibility, commitment towards community health and respect for elders.
(ii) The causal agent of malaria is Plasmodium the malarial parasite. It is a digenetic parasite with two hosts, i.e., humans and female Anopheles mosquito.
Female Anopheles injects saliva, while puncturing human skin for obtaining blood. The infected mosquito contains a large number of sporozoites in its saliva. The same are passed into human blood.
(iii) Plasmodium has three phases in its life cycle-schizogony, gamogony and sporogony.
(iv) One can do following activities to avoid malaria in your surroundings
(a) Covering open water drains.
(b) Proper drainage for quick transfer of waste water into streams.
(c) Spraying of insecticides, fumigation in surroundings, cattle sheds, etc.
(d) Using mosquito net, repellents and antimosquito creams.