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With the help of an example, explain how alien species invasion causes biodiversity loss.

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Allen species are non -native species which when introduced, in a new area. They become invasive and compete with the native species and cause extinction of indigenous species. For example, Native to the Caspian and Black Seas, Zebra mussels (Dreissena polymorpha) affect fisheries, mollusc diversity, and electric power generation in the Great Lakes in North America and Mississippi basin.
Partheniun, Lantana and Eichhornia are the exotic species of plants that have invaded India and caused environmental damage.They pose threats to the survival of many of our native species.

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Similar Questions
Q1
With the help of an example, explain how alien species invasion causes biodiversity loss.
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Q2
Given four causes of loss in biodiversity. Explain the adverse effects on native species on an invasion of alien species in a habitat.
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Why are (i) alien species invasion and (ii) Loss of habitat and fragmentation, considered to be the major cause of loss of biodiversity? Explain with the help of one example each.
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Biodiversity loss occurs due to
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