Which term needs capitalization in the sentence regarding moss growth?

The term "Northern Hemisphere" needs capitalization because it refers to a specific geographical region on Earth. Proper nouns like "Northern Hemisphere" signify a unique place or entity, distinguishing it from other parts of the world. In this case, "Northern Hemisphere" denotes the half of the Earth that is north of the equator and is recognized as a formal name within geographic and scientific contexts.

In contrast, while "Father" could be capitalized if it refers to a specific individual in a familial context, it is not a proper noun in a general sense. The term "North" is a directional term and does not need capitalization unless it is used as part of a proper noun (e.g., North America). The choice of "No error" would be incorrect as there is indeed a need for capitalization in "Northern Hemisphere." Thus, recognizing the proper nouns and their contexts is essential for proper grammar and usage in writing.