Organisms (belonging to the same species) may adapt in different ways to better exploit different environments or resources-- survival of the fittest. They also may evolve varied characteristics for attracting mates for reproduction. This means that different groups evolve differently. Over time, these groups or populations may become so different that they can no longer breed together -- and separate species are formed.
I think it was Joseph Adonis
The correct option is D. After an infection, autoimmune-related damage to the brain is believed to be the cause of the obsessive-compulsive disorder symptoms that develop.
<h3>What is obsessive-compulsive disorder?</h3>
A person with obsessive-compulsive disorder (OCD) frequently experiences recurring, uncontrollable thoughts and/or behaviors that they feel the need to repeat.
Thus, both can be used for treatment there is a minor difference between them one has received 254 ratings, with an overall rating of 7.9 out of 10. 75% of reviewers noted a favorable effect, while 14% noted a detrimental effect. On the other hand, a total of 2007 ratings has resulted in an average rating of 7.3 out of 10.
Learn more about obsessive-compulsive disorder here:
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I believe the answer is: conducting research to learn about the social world
The research in sociology is usually done in order to uncover whether a certain situation created by society affect the lives of the smaller social group. Rather than relying only on the words from authority, it reveal the perspective of all people involved starting from the bottom of society all the way to the power holders.