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WAEC - Biology (1989 - No. 53)

Which of the following effects would desertification have on the
ecological balance represented in the diagram above? The calorific
value' of the energy
. 10 x 104k cal obtained from the sun would decrease
10 x 104k cal obtained from the sun would increase
6 x 104k cal obtained at level I would increase
1 x 104k cal obtained at level V would increase
3.5x 104k cal obtained at level II would increase

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