1 “... to keep up with the food demand. The reasons for this are water shortages, depleting soil fertility...”

2 “... complicated microbial environments (the gut and teeth), soil fertility, and biogeochemical cycles...”

3 “... complicated microbial environments (the gut and teeth), soil fertility, and biogeochemical cycles...”

4 “... of research are intimately associated with the problems of soil fertility and crop yields, which in turn have...”

5 “... deterioration in soil fertility, environment, and irrational use of natural resources. At the same time...”