Stimulus.
A stimulus is a factor that causes a response in an organism.
stimulus
a stimulus causes a response
An action causes a reaction. This is also referred to as cause and effect in some areas.
an antigen
non response, in accurate response and selection bias
A positive response is when a response happens to a stimuli, and this response causes more of the stimuli to happen. A negative response is when a response happens because of a stimuli, and the response stops the continuation of the stimuli.
ejection i think
stimulus
Fear is a physiological response that causes butterflies in the stomach. Fear can also cause sweating, loss of voice, and extreme shyness.
It's general biochemical name is an Antigen - anti = against and gen = genesis.