The answer is panama canal.
Answer:
The first one is correct.
Explanation:
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There are many ways to reduce flooding. Many places use obstructions like Levees, Dams, and seawalls to hold water back in reservoirs. Additionally ditches and intricate rainwater drainage systems have also helped to reduce flooding in major areas.
Reservoirs are places where water is "stored", or where it stays for some period of time. The oceans, glaciers and ice caps, lakes, and the atmosphere are some examples of reservoirs.