A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
A chemical substance with the chemical formula H₂O, and an important biological solvent.
a substance used to stimulate the production of antibodies and provide immunity against one or several diseases, prepared from the causative agent of a disease, its products, or a synthetic substitute…
An organized, armed, and often a prolonged conflict that is carried on between states, nations, or other parties.
Gender is a range of characteristics used to distinguish between males and females, particularly in the cases of men and women and the masculine and feminine attributes assigned to them.
Generally regarded as the center of the nervous system in most living beings.
Questions about the religion of the Muslims; a monotheistic faith regarded as revealed through Muhammad as the Prophet of Allah.
Term has many and varied definitions depending on context, but is generally accepted as the period in life between birth and puberty, although this can be argued. Can also refer to offspring at any s…
Sleep is a naturally recurring state characterized by reduced or absent consciousness, relatively suspended sensory activity, and inactivity of nearly all voluntary muscles. It is distinguished from q…
A computer is a programmable machine designed to automatically carry out a sequence of arithmetic or logical operations.
Typically pertains to the study of aircraft. Can relate to the theories, design, construction, behavior and use of such craft.
for questions about the health of people on a community or population level. Do not use this tag for questions about the health of individuals or biological mechanisms.
for questions about claims based in India, or limited to India.
for questions about the use or properties of "recreational" drugs such as marijuana, heroin, cocaine or LSD.
Electromagnetism is the branch of science concerned with the forces that occur between electrically charged particles. Use this tag for anything related to electricity, electrical or magnetic fiel…
Intelligence has been defined in many different ways such as in terms of one's capacity for logic, abstract thought, understanding, self-awareness, communication, learning, emotional knowledge, memory…
Questions about a tubular weapon or other device designed to discharge projectiles or other material.
The forcing of undesired sexual behavior by one person upon another.
All forms of competitive physical activity which, through casual or organized participation, aim to use, maintain or improve physical fitness and provide entertainment to participants.
The scientific study of society.
for questions regarding "government" as a concept. DO NOT USE in lieu of "United States".
For questions about claims based in Europe, or limited to Europe.
A process in which energetic particles or energetic waves travel through a medium or space.
A device that can make and receive telephone calls over a radio link whilst moving around a wide geographic area.
Israel, officially the State of Israel, is a parliamentary democracy in the Middle East, on the south-eastern shore of the Mediterranean Sea. It borders Lebanon in the north, Syria in the northeast, J…
Commonly used term which refers to ethanol-containing alcoholic beverages. However, more broadly, the term can also be applied to any organic compound with a hydroxyl functional group bound to a carb…
The set of practices perceived by a community to be associated with the preservation of health and healthy living.
The specifically human capacity for acquiring and using complex systems of communication.
The action of coming to live permanently in a foreign country.
The ability a physical system has to do work on other physical systems.
for medical drugs, medications, pharmaceuticals etc. For other questions about drugs, use [recreational-drugs].
Questions about the system and organizations of communication through which information is spread to a large number of people; the coat of a wall consisting chiefly of fibers
Science dealing with the study of space and celestial bodies. Can pertain to the composition, origin, motion, behavior or physical aspects of bodies in space as well as the practical applications of …
Questions about World War II (WWII or WW2), also known as the Second World War; a global war that lasted from 1939 to 1945.
Evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. The biodiversity of life evolves by means of mutations, genetic…
for questions about claims based in Australia, or limited to Australia.
for questions about claims based in Germany, or limited in Germany.