Effect of Ecological Imbalance on food chains and webs:
The reduction in number of species at any food level in the ecosystem, due to migration, excessive killing or extinction, disturbs the food chains and food webs in that ecosystem. For example; over grazing or deforestation reduces/eliminates the vegetation (primary producers). As a result, the number of herbivores decreases (migration or death), this in turn, affects the carnivores in that region.
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