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.
Enzymes shows different enzyme activity in different pH value.If the pH is high or low than the optimum pH there is a decrease in the activity of the enzyme.But if the pH is very high or very low it may lead to the deactivation of the enzyme.
PHYSICAL
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.
All of the exposed ones.
Evaporation is a physical change; nitrogen remain nitrogen.
Gophers cause physical weathering. They dig burrows in the ground, allowing more rock to be exposed.
All humans (aside from those with brain differences due to injury or disease) have the same brain structures of relatively the same size. What makes us different is the way our brains are "wired" which has to do with the stimulus we are exposed to, as well as genetic factors.
Classical conditioning is a type of learning that pairs a neutral stimulus with an unconditioned stimulus to trigger a conditioned response. The purpose is to create associations between stimuli and responses, leading to learned behaviors or responses to certain stimuli.