Compound is when two or more elements are combined.
Source: www.austincc.edu/lesalbin/CHEMISTRY%20REVIEW.htm
The alternatives here are the command economy and a (pure) market economy.
The US economy is not a comman market economy because most of it is not centrally planned, as was the case in the Soviet Union.
However, The US economy is not a pure market economy because some of it is centrally regulated, for example certain substances are forbidden.
The placebo effect is when somebody's physical or mental health appears to improve after accepting a placebo or 'dummy' treatment.
<h3>How does the placebo effect result in the brain?</h3>
The placebo effect increases activity in an area called the rostral ventromedial medulla, which transfers pain information, and reduces activity in the periaqueductal gray, which helps the body suppress pain. The nocebo effect generated the opposite change.
In anticipation of benefit when a placebo is administered, dopamine receptors are started in regions of the brain associated with prize. As further evidence that the placebo effect is a authentic biological phenomenon, genetics can influence the strength of the effect.
To learn more about the placebo effect visit the link
brainly.com/question/5069588
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Answer:
the amount remembered depends on the time spent learning.
Explanation:
Hermann Ebbinghaus has studied the memory and discovered the spacing effect and the forgetting curve and was considered as the person to study memory. While conducting experiments on memory, he has used the nonsense syllables, for example, DIT, MUR, etc.
According to Ebbinghaus, he tends to forget the list of words being remembered less quickly in which he has spent more time memorizing and believed that best recall of the list being remembered is just after learning has completed.
