1

2

3 “... (produce), while other products have intermediate processing steps (meats), and their impacts on importance...”

4 “... (produce), while other products have intermediate processing steps (meats), and their impacts on importance...”

5

6

7

8

9 “... removal in these systems. Hydrogen also may be produced using the cellular machinery of nitrogen fixation...”

10 “... removal in these systems. Hydrogen also may be produced using the cellular machinery of nitrogen fixation...”