The three most common elements are oxygen, carbon, and hydrogen
Can you add a picture please, so we can see the text and graphs :)
Answer: The answer would be nucleus.
Explanation:
The nucleus is well known for the command center. That’s how you get the answer.
Scientific method
a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
