When I write a classification can i put more than one subject in a paragraph or dose each subject needs it own paragraph
Separate paragraphs, no doubt.
http://grammar.ccc.commnet.edu/grammar/composition/classification.htm
When writing a classification, it is generally recommended to have one subject per paragraph. This helps to maintain clarity and organization in your writing. Each paragraph should focus on a specific subject and provide relevant details, examples, or explanations within that subject.
By dedicating a paragraph to each subject, you can effectively develop and discuss the characteristics, qualities, or categories of each subject without confusing your readers. It also enables your readers to follow your thought process and understand the distinct aspects of each subject being classified.
However, there may be situations where it makes sense to talk about two related subjects within the same paragraph. In such cases, ensure that you clearly establish the connection between the subjects and maintain coherence in your writing.
In summary, while it is generally recommended to have one subject per paragraph in a classification, there may be exceptions depending on the relationship and context between the subjects.