Mountain ranges often appear on the edges of continents.
Fossils of the same animals appear on different continents.
m= no of neutron+ number of proton
=8+8
=16
charge= number of electron- number of proton
=8-8
=0
hence, element is oxygen
You are going to subract to get
36.4 - 21.0 = 15.4m
The distance of the object is 15.4 meters away from where it first began