Answer:
Explanation:
Antibiotics are chemical agents that are used to treat bacterial infections. ... Vaccines are used to prevent infection, particularly viral infections.
Answer: Read through this, hope It helps
Explanation:
Covalent bonds are formed when nonmetals form compounds with each other by sharing electrons between them.
Ionic bonds are formed when one ion — an atom or molecule with a net charge, either positive or negative — finds another ion of the opposite charge to bond with, creating an overall neutral ionic compound.
In gases and liquids, heat is usually transferred by convection, in which the motion of the gas or liquid itself carries heat from one place to another. ... If you boil water in a kettle, the heat is transferred through convection from the fire to the pot.
MARK BRAINIST IF THIS HELPED!!
Each period in the periodic table corresponds to a principal energy level