Answer:
1. distance above sea level.
2. Deep narrow valley with side steeps.
3. A line that separates the flow of a river
4. An area of land that is surround by higher land and may be drained by a river.
5. A narrow passage
6. The land deposited at the mouth of a river
7. The process by Which the soil is prepared and used to grow crops
Explanation:
The U.S. has more than 87,000 dams greater than six feet high (and two million overall). While many dams continue to provide benefits such as flood control, irrigation, and water supply, for other dams the cost of maintenance or the negative effects on communities, fish, and tribes justifies their removal.
Dam owners and regulators decide whether to remove a dam by weighing many factors including: the cost of removal and the ability to replace any lost power generation against avoided long-term maintenance; safety concerns; benefits to endangered fish populations; increased recreational and commercial fishing; and restoration of cultural values of nearby tribes.
By 2020, roughly 70% of dams will be more than 50 years old, inviting us to reconsider the value to the public of long-term investments in this infrastructure.
<u>UNASUR</u> is the newest trade block in Latin America.
Answer: Option E
<u>Explanation:</u>
UNASUR is a trade block that was signed in 2008 and came into force in the year 2011. The countries who are a part of this trade block are twelve in number and some of these countries are Chile, Peru, Uruguay, venezuela and eight more. The main focus of this block is on the physical region integration which includes fields like energy, infrastructure, education, health and many more.
Answer:
its acually
Tokyo-Yokohama
Tokyo-Yokohama continues to be the largest city in the world, with nearly 38 million residents, according to the just released Demographia World Urban Areas (12th Annual Edition)
