How the construction of large dams cause Economic and Environmental problems ?

Explanation

### Step-by-Step Solution

1. **Introduction to Large Dams**:
- Large dams are constructed primarily for water storage, hydroelectric power generation, irrigation, and flood control. However, their construction can lead to various economic and environmental problems.

2. **Loss of Ecosystem**:
- The construction of large dams often requires the flooding of vast areas, which can destroy local ecosystems. This loss of biodiversity can have long-term effects on the environment, as many species may become endangered or extinct.

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