I think you mean here organ transportation.
An ideal organ transportation is within the same person - that way, that person's immunological system won't attack that person's new organ.
Such transplantations are actually happening at times, in the case of skin drafts - a person's skin can be transplanted into another part of their body.
Answer:
They expanded their empire by trade.
Explanation:
The Federal government would be too weak to do enforce its laws
The most important producer in both freshwater and marine ecosystems is phytoplankton.
