.A ______________ _ is a signal to which an organism responds

http://www.biology-online.org/dictionary/Stimulus

stimulus

A stimulus is a signal to which an organism responds.

To understand how the term "stimulus" is defined, one can follow these steps:

1. Start by identifying the keyword in the question: "stimulus."

2. Next, try to recall the definition or general understanding of the term. If you are unfamiliar with the term, it is helpful to break it down into smaller components. In this case, "stimulus" can be broken down into "stimu-" and "-lus."

3. Based on the root words, "stimu-" sounds like "stimulate" or "stimulation," which is often associated with provoking a response or reaction.

4. To confirm your understanding of the term, you can consult a reputable source such as a dictionary or a scientific textbook. Searching online or using a physical copy of a dictionary will help you obtain the precise definition.

By following these steps, you can build an understanding of what a stimulus is and explain it to others.