A. The oxygen means it's a respiratory, and the hairs act to ensure no foreign contaminants make you sick.
Answer:
Your answer would be Ionic bond.
Answer:
sun rises in the east so to the right of the front of your house and sets to the left which is south.
Explanation: what i just said
60 elements! I don't exactly know every element known, so if you are asking that, please tell us, but what I do know is that there were 60 elements in the periodic table by 1860.