If all cells the same then you won't be able to touch... if everything is eye, where is listening, or touch...
like if you don't have hand, and all are foot... ugh.. my grammar's bad
I hope you understand
More than 3.6 billion years!
Answer:
Advantage
Explanation:
I don't want one of my great ancestors mutations. I want all of my toes not just 4 of them.
Cell shape....................