The eons that make up 90% of Earth's history are the Precambrian eons, which consists of Hadean, Archean, and Proterozoic eons.
Answer:
46 Chromosomes = 46 Chromosomes, cells are Identical copies
Explanation:
I'm pretty sure it's primary growth. I might not have studied this type of biology yet, but secondary growth would definitely not be the answer.<span />
The answer is stem cells. Normal stem cells and germ cells can also be said to be immortal