Why it is important to evaluate impact assessment studies before any development could be made on the environment? ​

environmental and economic benefits can be archived such as reduce cost and of project implementation and design,avoided treatment / clean up costs and impacts of laws and regulations

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.