maddieburden maddieburden

20-05-2021
Biology

contestada

What evidence BEST supports the presence of atmospheric oxygen 2.7 billion years ago?
a. carbon 14 in plants
b. fossils found in stomatolites
c. layered iron rust in rocks

Respuesta :

riya044262 riya044262

30-05-2021

Answer:c

Explanation:layered iron rust in rocks

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