daradiscua daradiscua
  • 20-11-2020
  • Biology
contestada

What are the MAIN processes through which oxygen is cycled?
A
acid rain and greenhouse effect
B
nitrogen fixation and combustion
С
decomposition and respiration
D
photosynthesis and respiration

Respuesta :

alicyabaca14
alicyabaca14 alicyabaca14
  • 20-11-2020
I’m pretty sure the answer is D
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