Answer:
C) Re-do the measurements, several times, and take the average density before making a decision.
Explanation:
For the correct identification of the metal, weather its nickel or copper, Carl should repeat the experiment several times and take the average density before making the decision. It is important because it reduces the chance of error and ensure the data integrity. The more the sample size is, lessen would be the error.
It surrounds the cell membrane and provides cells with structural protection and support. It also helps filter.
Answer:
actually it's bone marrow thank me later
The answer would still be ACC
