(a) Illustrate out the impact of man on environment, with reference to the employ of pesticides, overfishing, artificial fertilizers and deforestation.
(b) Point out human activities which have resulted in air and water pollution and discuss some of measures which may be employed to prevent further pollution.
Using a labelled diagram, illustrate out the processes performed in human digestive system with specific reference to different organs involved.
(a) Illustrate out five (5) types of endocrine glands and give their functions.
(b) Illustrate out the functions of T lymphocytes, B lymphocytes and phagocytes and illustrate out how they interact throughout the immune response.
(a) Illustrate out the different organs involved in excretion in humans. Using an appropriate instances and with the assist of a labelled diagram, illustrate out how homeostasis is maintained by excretory procedure.
(b) What do you understand by the term infectious disease? Illustrate out the mode of replication and transmission of a named (i) viral and (ii) bacterial disease. Point out the preventive as well as therapeutic measures for curing patients.