Which two types of information are found in an element's box in the periodic table?
A. Atomic number
B. Chemical symbol
O C. Chemical formula
O D. Atomic structure
( TWO ANSWERS)

Hi :)

The answer is A and B

Hope this helps!

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They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.