1.

469 rounded to the nearest thousand

Answer»
  • \huge\red{\mid{\fbox{\tt(answer)}\mid}}Most ozone resides in the stratosphere (a layer of the atmosphere between 10 and 40 KM above us), where it acts as a shield to PROTECT Earth's surface from the sun's harmful ultraviolet radiation. With a weakening of this shield, we would be more susceptible to skin cancer, CATARACTS and impaired immune SYSTEMS


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