Answer: Stimulant is a factor which brings change in the environment.
Explanation:
The external factors and internal factors both can develop changes in the environment of a living being. The external factors include sunlight, weather, touch, vibration, predation and others. The internal factors include the physiological and biochemical changes in the body, emotions and mental make up.
Answer:
Stimulant is a factor which brings change in the environment.
Explanation:
