I think the best answer would be the last option. The main purpose of a service panel in a house is to keep electrical hazards localized. Service panels are used to identify circuit loads and isolate these loads so when you want to check the equipment you can easily identify the line. Also, it would serve as the isolation point to avoid any electrical hazards.
Positive charge=proton
Negative charge=electron
No charge/neutral=neutron
C) above, the Earth's core is about the melting point of iron.
a substance's density is the same at a certain pressure and temperature, and the density of one substance is usually different than another substance.
Answer:
The answer are given above in attachment.
