You can not worry about being shocked due to the cord being insulated not allowing the voltage to go through you but the cord
I believe its A because all the other one dont make scene really.
The importance of the semi-conservative model is unhealthy old and new genes cancel each other. The result new cells are disease and mutation free. ... DNA replication is semiconservative because DNA is composed of two complementary strands, each of which acts as template to construct a new strand complementary to itself.
The sun is a very big star that was created by many minerals and every star and put together
