Depend on the comparison. if u want to see greater or less then use = < > or the difrent subtract . add if finding the total.
The app will only let me give one photo at a time, so here's part 1.
Answer:
11
Step-by-step explanation:
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,
