The correct answer is letter A. Biosphere is not directly studied in one of the main branches of Earth/Space science. This is a branch of science that focuses on living organisms that are living in different populations or communities all over Earth. The other three choices directly study these branches of Sciences.
Northern anti-slavery sentiment was most strongly linked to the issue of dueling sentiment. Option C is correct.
<h3>What is dueling?</h3>
A dueling is defined as a corporate fight between two people using weapons and pursuing rules. Northern anti-slavery sentiments were powerful because it was most straight linked to the dueling matter.
Therefore, option D is correct.
For additional information on the slavery, refer to:
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The principle of uniformitarianism states that geologic processes that we observe today occurred in the same way in the past. The correct option among all the options that are given in the question is the last option. Incidents such as floods, hurricanes and huge storms have not occurred only in the present time, but it has been occurring in the past as well.
