Fragile ecosystems cover:
Correct answer: D. All of the above
- A. The arid and semi-arid zones of the world, arid savannas of the tropics, the slopes of the mountains of the tropics
- B. And subtropics and forest areas of the developing world under shifting cultivation have been described as 'Fragile Ecosystems'
- C. Because their equilibrium appears to be easily upset and because they become ecologically degraded if certain forms of land use
- D. All of the above
Explanation
Fragile ecosystems include arid and semi-arid regions, tropical and subtropical mountain slopes, savannas and areas under shifting cultivation. Their ecological balance is easily disturbed by unsuitable land use, so all the statements together are correct.
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