According to the article, what are TWO contributing
factors to unhealthy soil?

Mineral fertilizers and mechanical digging

Explanation:

answers can be found in paragraphs 7 and 8

i believe that is the truth if thats what you where asking for

specific audience will understand the main ideas. for example, if you were writing an instruction manual for rocket scientists, it would likely look very different from one you would write for young children. your language, tone, and writing style would change significantly.