<span>This is the major part of operant conditioning. When a behavior is repeated because of a positive (or negative) reinforcement, conditioning is taking place. Positive reinforcements give a reward or some kind of response for continuing a behavior, while negative reinforcements lower the intensity or remove a punishment for continuing the behavior.</span>
With the increase of the number of resonance structures, the entropy of a molecule also increases. Hence, Option A is correct.
<h3>What is a
molecule?</h3>
A molecule is the smallest particle which is a combination of two or more atoms of a substance that are held together. For instance, H2O (water), O3 (Ozone), and many more.
In the substance, there are all the properties like physical and chemical properties which are required by them. When there is increase in any of the components in the resonance structure, there is increase in the molecule also.
Thus, Option A is correct.
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The complete question is attached in text form:
What happens to the entropy of a molecule as the number of resonance structures increases?
A. Entropy also increases.
B. Entropy decreases.
C. Entropy has no relationship to the number of resonance
If a researcher studies the effectiveness of anti-drug commercials by comparing the self-reported frequency of drug use among teens six months before and six months after the commercial aired, she is using an Pretest/posttest design.
Answer: Option D
<u>Explanation:</u>
The pre-test is defined as a test carried out on a product or service before it is set to enter into the market for sale. It is usually done to check not only the effectiveness and efficiency of the product or service but also to check the safety of it too.
Sometimes a product or service is exposed to text after it enters the market. This is known as post-test as that is carried out after the product enters the market.
According to Jane Jacobs, the circumstance that would be most safe for city dwellers will be a busy street with many shoppers, workers, and sightseers walking around.
According to Jane Jacobs, a city that is busy is considered to be the safest for city dwellers.
When the city is busy, people are present in shops, roads, and other places. In this case, there will be less chance for misfortune to happen because an attacker will fear the people that are present around. Hence, when the city is busy and people are either going to work, are present in shops, are working etc, there will be fewer chances of an attack and the city will be safe during this time.
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The atmosphere of Earth is the layer of gases, commonly known as air, retained by Earth's gravity, surrounding the planet Earth and forming its planetary atmosphere.
