Answer:
15
Explanation:
the atomic number is the number above the symbol. the number below is the atomic mass.
When there is not enough oxygen for cells to use cellular respiration<span />
Answer: A) At your zenith
Explanation: Because Polaris, The "North Star", Is located alost directly over the Earth's North Pole. FUN FACT: This star was also used by sailors to navigate when maps could not be used