1. Elements can be used in war in many ways. For example, elements that are highly reactive can cbe used for nuclear weapons and other dangerous substances like gases.
2. "Harbinger" means foretelling or something that is predicted based on an event that occurred before.
3. Uranium does not benefit people other than the fact that it is used for war. It can be used to harm people because it is very toxic and is used in making nuclear weapons which can even annihilate humans.
4. It is ironic that Haber won the Nobel Peace Prize because he did everything but made peace. He was war criminal who made weapons and gases for the Nazis to use on people. Despite being a former jew, he became affiliated with them. Haber was anything but peaceful and his contributions were pretty insignificant to other scientists.
5. The continent that holds the most tantalum and niobium is Africa. This is in the country of the Democratic Republic of Congo. These elements can still be found in Congo and Australia. We need them for cellphones today.
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