The estimated population was 18,000 to 25,000 people
As he slowly gets up to investigate, his heart begins to race, his mouth is dry, and he begins to sweat; his<u> "sympathetic nervous system" </u>has been activated.
The sympathetic nervous system (SNS) is a piece of the autonomic nervous system (ANS), which likewise incorporates the parasympathetic nervous system (PNS).
The sympathetic nervous system ordinarily capacities to create restricted alterations, (for example, perspiring as a reaction to an expansion in temperature) and reflex modifications of the cardiovascular framework. Under states of pressure, be that as it may, the whole thoughtful sensory system is enacted, delivering a prompt, boundless reaction called the fight or-flight reaction.
The natural environment affected travel west because of a number of land masses that had to be traversed in order to reach the West Coast of the United States. The Mississippi River along with other major rivers like the Colorado (depending on the route taken) had to be crossed. In addition the Rocky Mountains posed a serious challenge in order to reach the Western United States. Beyond the Rockies there are also the Sierra Nevada mountains and deserts in Nevada, California, and Arizona that must be crossed to reach the West Coast. Therefore, there are a number of challenging environmental features that had to be crossed to reach the Western United States.
Answer: Generally Recognized as Safe (GRAS)
Explanation: In 1994, the Dietary Supplement Health and Education Act was passed into law. This act tasked the Food and Drug Administration FDA with the role of ensuring that ingredients and dietary supplements are safe for consumption. However, ingredients and supplements that were already marketed before 1994 do not need approval, these items were "grandfathered" and Generally Recognized as Safe (GRAS).
