Anything after 'once' is academic
As stated, the question is overly obvious; the world can be destroyed only once because once it is destroyed, there is nothing left to be destroyed, right? How many times could the same ceramic dish be shattered? More than once, but only if you are willing to glue it together again, and if the whole world were to be shattered, there would be no one left to glue it together again (unless you are expecting aliens from outer space to take an interest). However, you might have been thinking of the principle of overkill, that the nuclear arsenals of the world contain more weapons than would be needed to destroy the entire world. At a rough guess, the total inventory of nuclear weapons in the world is sufficient to destroy a dozen worlds at least (if we had a means of getting to other worlds, of course). But the Earth can be destroyed only once.
Once, because the first time The USA, UK, Canada and France will attack instantly after the first!
Uranium is extracted from the earth by mining; after this it is processed by chemical/metallurgical procedures in useful materials as nuclear fuels, nuclear weapons, chemicals for the industry and laboratory etc.
Nuclear power can be bad and good for the earth it depends on what happens
Nuclear energy, ultimately, comes from the Sun. If you are talking about nuclear energy and weapons as currently available, we get Uranium from the Earth, as it is a naturally occurring element and refine it from 238U to 235U, making it more fissile. Other fissile elements, such as 239Pu come from reactors, so the 235U, comes first.
Yes, by a small amount, placing them in strategic locations that would make the earth's crust break up and covering the planet in lava
Yes they are very effective. Nuclear weapons are dangerous and really effective to destroy all life on earth. They are very powerful.
{| |- | The exact number probably remains highly classified. Both sides kept such things secret, while making it obvious to the other that the number was substantial. Many of the weapons have been destroyed, but more than enough remain to devastate life on Earth as we know it. |}
yes and no depending on how much nuclear bombs it can start a ice age like the asteroid that hit earth so its not enough to destroy the earth
Your questions asks for an opinion. My opinion is no. The knowledge of how to build a nuclear weapon is out there. There are too many people with different views and values for nuclear weapons to just go away.
{| |- | I'm sure the number is in the ten's of thousands. The exact number probably remains highly classified. Many of the weapons have been destroyed, but more than enough remain to devastate life on Earth as we know it. |}
As stated, the question is overly obvious; the world can be destroyed only once because once it is destroyed, there is nothing left to be destroyed, right? How many times could the same ceramic dish be shattered? More than once, but only if you are willing to glue it together again, and if the whole world were to be shattered, there would be no one left to glue it together again (unless you are expecting aliens from outer space to take an interest). However, you might have been thinking of the principle of overkill, that the nuclear arsenals of the world contain more weapons than would be needed to destroy the entire world. At a rough guess, the total inventory of nuclear weapons in the world is sufficient to destroy a dozen worlds at least (if we had a means of getting to other worlds, of course). But the Earth can be destroyed only once.
Four Times Over
The only nations to detonate nuclear weapons in outer space are the United States and the Soviet Union. During the heart of the Cold War, the United States and the former Soviet Union launched and detonated a combined total of over 20 thermo nuclear weapons in the upper atmosphere and near space region of earth in an effort to test the effects of launching an offense as well as countering an offense. Even during the Cuban Missile Crisis! Both governments do not give directions detailing how to detonate a nuclear bomb in space.
Eventually there were so many nuclear weapons, total destruction of the Earth was possible. The term "Mutually assured destruction (MAD)" was used to describe the resulting holocaust.
As a natural element curium exist in infinitesimal amounts in uranium ores.Artificial curium is from nuclear wastes, nuclear reactors burned fuels, nuclear weapons tests.
About 3 billion years ago, when U235 was much more common, it did. Look up the Oklo natural reactors in Africa for an example. There were probably other sites too.Manmade nuclear power reactors.Manmade nuclear weapons.