Changes in our surrounding that makes us respond to them are called [[1]].

Changes in our surroundings that make us respond to them are called stimuli. Stimuli can be anything that activates our senses and causes a response from our body or mind, such as light, sound, temperature, touch, or chemical signals. Different types of stimuli can trigger different types of responses, such as reflexes, emotions, or cognitive processes, and our ability to detect and respond to stimuli is critical for our survival and adaptation to changing environments.