Geography 3 Marks Question

Animals capture and store energy, produce and decompose organic materials, help to cycle water and nutrients throughout the ecosystem, fix atmospheric gases, and help regulate the climate. Functions performed by the species are useful for the continuity of ecosystem as well as for the survival of the human beings on the earth.

There are three different levels of biodiversity:

• Genetic diversity: It refers to the variation of genes within species.
• Species diversity: It refers to the variety of species.
• Ecosystem diversity: It refers to the number of ecosystems in a certain area.