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

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

3

4

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

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

7

8