434545656575 434545656575
  • 02-02-2015
  • Social Studies
contestada

Any potentially harmful substance that humans add to an ecosystem
A)
is called pollution.
B)
might cause acid rain.
C)
is always a carcinogen.
Eliminate
D)
helps deplete the ozone layer.

Respuesta :

GemSaysHi GemSaysHi
  • 02-02-2015
A) is called pollution
Answer Link
Psycosixx
Psycosixx Psycosixx
  • 02-02-2015
A) it causes pollution 
All of the other possible anwsers is not caused by humans.


Answer Link

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