C. There are already enough stem cells
Answer:
when a nation or individual concentrates its productive efforts on producing a limited variety of goods.
Explanation:
Basically when a lot of effort is put into a product instead of another so they set a limit of time.
C. American society has failed to recognize the achievements of Native Americans
Answer:
1: 30%
2: (this is probably said in the end of the video you must have watched)
3: transitional zone
4: (must be in the video you watched)
Explanation: