1. . Which of the following are degradable waste products?
(A) Vegetable, peels, garden refuse, paper
(B) Metal, glass, plastic
(C) Rubber, plastic manure
(D) Glass, wood cutting and batteries
2. . The main cause of water pollution is
(A) Oil spills, untreated sewage and chemical effluent
(B) Chemical effluent, leaching of pesticides and algae
(C) Pesticides, treated sewage and litter
(D) Untreated sewage, glass bottles and plastic bags
3. . Typhoid, cholera and dysentery are diseases that are spread by
(A) Air pollution
(B) Water pollution
(C) Land/soil pollution
(D) The use of pesticides
4. . Non-biodegrade means
(A) A substance that costs too much to recycle
(B) A substance that is thrown away as kitchen refuse
(C) A substance that cannot decompose naturally
(D) A substance that will not dissolve in water
5. . Deforestation means that
(A) Is the removal of all plants and trees from a large area of land
(B) Is as a result of concentrated soil erosion
(C) Is the result of wild fire
(D) Is the complete removal of a forest to clear a large area for agriculture
6. . Nutrient of crop taken from air
(A) Oxygen
(B) Potassium
(C) Carbon dioxide
(D) All of these
7. . A positive human influence on the environment
(A) Deforestation
(B) Overpopulation
(C) Pollution
(D) Conservation
8. . Biological control is useful because it
(A) Usually attacks all plant species
(B) Usually originates in the country where the alien plant destroys indigenous vegetation
(C) Can destroy an alien plant infestation or reduce its population numbers
(D) Usually attacks all useful micro-organisms
9. . Main gas from landfill is
(A) Methane
(B) Nitrogen
(C) Carbon dioxide
(D) Oxygen
10. . The major sources of pollution is
(A) Solid waste
(B) Pesticides
(C) Sewage
(D) Fertilizers