It's kind of hard to explain but I'll try:
It might be because they identify it as not a threat, causing them to react less (closer to normal heart rate) or they could realize it is a threat, causing their heart to beat faster.
Also, some people seem to always be on edge and jumpy, like if you move suddenly they jump three feet in the air.
Physical activity might be because they are already used to it, their body has adjusted and it doesn't affect them as much.
This might not help much, but oh well, I tried.
It could be one person has already been exposed to that same fight or flight scenario and learned it was not a threat to their well being.
erosion
Non-reactive means there is no response when exposed to stimulus or to other materials.
The process that creates soil from bare rock is called"weathering". The chemical and physical processes of [weathering] transform igneous rock.
In classical conditioning, the learner is typically an organism (such as an animal or human) that is exposed to a conditioned stimulus paired with an unconditioned stimulus. The learner's behavior changes as a result of this pairing, leading to the formation of a conditioned response.
stimulus discrimination
Aversion therapy is a form of psychological treatment in which the patient is exposed to a stimulus while being subjected to some form of discomfort.
The stimulus for photochromic material is light, particularly ultraviolet (UV) light. When exposed to UV light, these materials undergo a reversible chemical change that alters their color or transparency. This property allows photochromic materials to transition between different states in response to varying light conditions, such as darkening in sunlight and returning to their original state in the absence of UV light.
All of the exposed ones.
The purpose it to associate an unconditioned stimulus (ex: sound of a bell) to a conditioned stimulus (ex: food) in order to get a conditioned response (ex: salivation) every time the subject being conditioned is exposed to the unconditioned stimulus (ex: sound of a bell creates salivation).
Prior exposure refers to being previously exposed to a particular stimulus, such as a virus or a concept. This exposure can impact how an individual responds to the stimulus in the future, influencing things like immunity or recognition. It is often used in contexts related to health, research, and learning.
This is a chemical property. The reaction of green carbonate with moist air to form a different substance involves a change in the chemical composition of the substance, indicating a chemical reaction.