answer:
it took 17,000 years for CO2 to go from 200 to 300 ppm.
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Answer:
inhaling??
Explanation:
I'm not quitte sure what you mean? Is it a multiple choice question?
Answer:
Perform different functions for the organisms
Explanation:
1-Stem cells can differentiate into other specialized cells.
2-Specialized cells are more complex.
3-Specialized cells usually do not reproduce