ALL subatomic particles fall into one of those three categories.
Carbohydrates, proteins, and fats are the three primary categories into which food molecules fall. Carbohydrates provide energy, proteins are needed for growth and repair, and fats are important for energy storage and hormone production.
Food molecules fall into three categories: carbohydrates, proteins, and lipids (fats). Carbohydrates are the body's main source of energy, proteins are essential for building and repairing tissues, and lipids provide energy storage and help with nutrient absorption.
monoamines
noble gases
warrant and warrantless searches
Generally they fall into two broad categories: hardware and software.
That depends on what the categories are.
Protection?
Marijuana falls under the following categories: Drugs and illegal drugs
Comedies, Tragedies and Histories
Cells fall into broad categories depending on whether they are prokaryotic or eukaryotic. Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a distinct nucleus and membrane-bound organelles. These two categories encompass the majority of cells on Earth.
Drugs and illegal drugsfast and slow
Communication skills fall into the broad categories of oral and written skills, both of which managers use in many different ways
Two categories that fall under a substance are elements and compounds. Elements are made up of only one type of atom, while compounds are made up of two or more different types of atoms chemically bonded together.
There are actually several binary, mutually exclusive categories fiber optic cables can fall under. The most common is propagation mode, of which the two types are single mode and multimode.
That depends on what the categories are, and whether you're talking about a computer keyboard or a music keyboard. Percussion