195782 195782
  • 17-11-2017
  • Biology
contestada

PLEASE HELP ME !!!!
Which organisms produce about half of the oxygen on Earth?

A. Plankton
B. Humans
C. Rocks
D. Aquifers

Respuesta :

alexandriajones1 alexandriajones1
  • 17-11-2017
A. plankton is the right answer
Answer Link

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