You don’t have enough information listed in your question to give an answer. For example, what does DE and BC represent? What is your parameters?
Answer:
To allow the proper amount of water to be passed through to other communities.
Explanation:
Earthquakes and tsunamis are caused by pressure building up in the Earth's crust along the intersection of tectonic plates, while tornadoes are created by updrafts and downdrafts interacting with wind.
<span> Japan has significant coastal waters, which provide the country with fish and other seafood. However, the demand for fish is so high that it must be supplemented with imports from abroad. Although Japan has a small amount of arable land, the country has some of the highest crop yields in the world, producing over 60 percent of its own food each year. The country has adequate supplies of gold, silver, and magnesium, but it must import many of the minerals essential to its booming electronics industry, such as iron ore and copper.</span>