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Q: Why are some scientists concerned about running out of helium on earth?
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Which layer of the ozone causes concern among scientists and the public is a zone of ozone depletion in the?

Ozone is present in the stratosphere of the earth's atmosphere. It is in this region that the scientists are concerned.


Why do you think scientists are concerned that static electricity will be much bigger problem for astronauts than it is for people here on earth?

No humidity to discharge it.


Is helium found in Earth's crust?

No. Helium is a gas and is generally found in the earth's atmosphere.


Is there helium in the atmosphere?

Yes there is helium in the Earth's atmosphere.


Why are scientists concerned about near-Earth asteroids?

Asteroids, even very large ones, actually come close to earth regularly and cause no harm and no effect on life on earth. The concern would be a large asteroid crashing into the earth.


Is helium lighter than earth?

yes. helium is lighter than earth or even air.


Why can gases such as helium escape the earth's atmosphere?

because earth has gas particles that can let helium go


Where is helium most common found?

helium is a gas and is found only in the earth's atmosphere


Does earth have helium?

yes


How do you mine helium on earth?

Helium is extracted from natural gas wells.


Is helium a rare gas?

Helium is the lightest member of noble gases. Due to the atmospheric pressure on Earth, helium does not exist on the Earth's surface. On the other hand, helium is the second most abundant element in the universe.


Is helium a family name or a rare earth element series?

family name of rare earth element series of helium