viruses are made of proteins and contain genetic information to produce more of them in the form of DNA or RNA.
Answer:
The number of electrons in the outer energy level
Explanation:
Well, I think it's mainly for photosynthesis and gas exchange. A leaf is normally flat, light, and thin, so that the sunlight can get to the chloroplasts in the cells.
Covalent bonds would be formed when a non-metal bonds with another non-metal
Colloidal silver/ionic silver adds antibacterial power
