There are 56 neutrons. To find them, you just have to subtract the atomic number with the atomic mass. If you dont know, the atomic number is the number of protons (and electrons) in an atom. The atomic mass is the number of both the protons and neutrons. Of you subtract the atomic number, you get protons.
Would it be talking about water? In which case the answer would be hydrogen and oxygen.
I don't know but i think that the correct answer is that a long time ago the sea level was really high and mountains were under the sea and when the sea level got lower the mountains " got higher" and it took the fish with them
True
You welcome, have a good day :)
