Answer:The Nucleus: The Center of an Atom. The nucleus, that dense central core of the atom, contains both protons and neutrons. Electrons are outside the nucleus in energy levels. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge.
The germ theory of disease states that many diseases are caused by the presence and actions of specific micro-organisms within the body. In other word, diseases are caused and spread by the germs.
The answer would have to be that Cells are the most basic unit of life. I hope that helps! If you don't mind, can you please give me the brainliest answer?
