Question

what is the term for changes in the internal or external environment that cause a response? (1 point)
○ signals
○ nerves
○ stimuli
○ messages

Explanation:

In biology, stimuli are changes in the internal or external environment that elicit a response from an organism. Signals can be part of the communication within a biological system but are not the general term for environmental - changes causing a response. Nerves are part of the nervous - system structure and not the term for such changes. Messages are also related to communication and not the specific term for environmental changes causing a response.

Answer:

C. stimuli