Sample Essay

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Suggested Answer:

Able state the definition:

(a)

· conservation of biodiversity

- the maintenance of environmental quality and natural resources in a ecosystem // the maintenance of a particular balance among the species present in a ecosystem.

· preservation of biodiversity

- the protection of spesies without reference to natural change in living systems or to human requirements.

· conservation of biodiversity

(b) Able to describe why the biodiversity very important.

1. Ecological reason

- Loss of biodiversity makes ecosystem less stable/ disrupts the food web/ biogeochemical cycle

- (biodiversity) is needed for survival of life on [1+1]

2. Economic reason

- provides human with the cereal crops/ livestock/ fish/ spices/ plants

- it is a resource for timber needed ( to build shelter) [1+1]

- source of pharmaceutical drugs to treat certain diseases / malaria// medicinal plants

- maintain soil fertility // balance ecosystem

3. Aesthetic/ recreational

- ecotourism// pleasure [1+1]

4. Ethical reasons

- provides a field of vast research for scientist [1+1]

Total = 8 marks