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Question: Most debris from atmospheric tests of nuclear weapons __________.

Options:

  1.  Fell immediately
  2.  Was pushed into the troposphere
  3.  Was pushed into the stratosphere
  4.  Disintegrated

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3. Was pushed into the stratosphere

Most debris from atmospheric tests of nuclear weapons was pushed into the stratosphere.


Explanation:

Some of the radioactive debris from atmospheric nuclear weapon test lands relatively close. Some stays in the troposphere and are carried by air around the globe, lasting for about a month.

Most debris is pumped into the stratosphere, the next layer of atmosphere (from 5 to 50 km above) where it stays for months, and where it slowly drops backs to the earth.

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