Question 1:
(i)  With the aid of a diagram, briefly explain the natural environmental system.
(ii)  Explain the green house effect, and give  2 examples of green house gases, and their sources.
(iii)  With the aid of a venn diagram, explain what is sustainable .development?
(iv)  List 5  factors that affect the severity of damage caused by natural or technological disasters.
(v)  List 10 health and safety issues an industrial Hygienist deals with at a workplace.
Question 2:
(i)  Elaborate on 5 examples to show how water pollution affects human health?
(ii)  Give 5 examples of industrial pollutants, their sources, and their effects on man.
(iii)  Elaborate on 5 effects of Deforestation.