Answer: A. to provide freshwater to support human activities.
Earth's age is best estimated by:
Answer: Out of all the options presented above the one that represents the best way to estimate the Earth’s age is answer choice D) using radioactive isotope pairs to date the oldest rocks. This method is best known as radiometric dating.
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It could have pros because it may be a better technique, and helps you get more of what you want, but it could also have cons, because it could give back less than what you got with the other technique. This is like if you have a job filing paperwork, and you have a good technique or tool to help you along quickly, but you decide to try something new, and end up being able to get things done faster. However, you might decide to change your techniques again, and you may find that it gets things done much slower. Hope this helps.
Asia is generally defined as comprising the eastern four-fifths of Eurasia. It is located to the east of the Suez Canal and the Ural Mountains, and south of the Caucasus Mountains (or the Kuma–Manych Depression) and the Caspian and Black Seas.
Châu Á thường được định nghĩa là bao gồm bốn phần năm phía đông của Âu-Á. Nó nằm ở phía đông của kênh đào Suez và dãy núi Ural, và phía nam của dãy núi Caucasus (hoặc Kuma – Manych Depression) và biển Caspi và Biển Đen.
B. Nicaragua
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