Did people realise that cutting down forests and modernisation like building industries and cities would create such a drastic effect on the ecosystem? It has led to many endangered species, and is posing a threat to human lives as well.
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Yes, scientists knew and said such long ago. Does that mean everybody will immediately listen? Now that people are seeing the effect, they are beginning to realize what they did.
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Copyright © 2017 HubPages Inc. and respective owners.