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20 Amino acids is the answer
- developed from two separate eggs. Identical twins come from one zygote that splits into two embryos, while fraternal twins come from two separate eggs that are fertilized.
There is a limit to how much Euglena and other single-celled organisms can grow because single cell organisms tend to not capable to do complex activities.
Humans for example has billions of cells within our body that allow us to grow and do complex activities
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