For instance, the journal Soil Biology & Biochemistry requires that the word "soil" not be selected as a keyword. Just verify the 'Guide for authors' of the journal, but normally they have less than 250 phrases. You should be correct, utilizing the phrases that convey the exact which means of your research. The summary supplies a short description of the attitude and objective of your paper. It is essential to remind that the abstract provides a brief description of the…