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19.List any four factors which may lead to 'loss of biodiversity

Answer»

The major causes of species losses in a geographical region are:(i)Habitat loss and fragmentation.(ii)Over-exploitation of natural resources.(iii)Alien species invasions can cause decline or extinction of indigenous species.(iv)Co-extinctions, i.e. when a species become extinct, the plant and animal species associated with it in an obligatory way, also become extinct.



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