Answer:
Precambrian period
Step-by-step explanation:
Since the Great oxidation period = 2.4 Billion years ago era = Precambrian period.
Micro-fossils attributed to cyanobacteria are abundant during the Proterozoic that came later 2,5 billion years ago and ended 540 million years ago,
<span>4x +5=9x-2
9x - 4x = 5 + 2
5x = 7
x = 7/5
x = 1.4</span>
Answer:
a triangular prism
Step-by-step explanation:
they are all 180)
Answer:8
Step-by-step explanation: it cannot be 2, 6, or 5 because they are all less than 7.
Answer:15/27(third option is the correct answer)
