Answer:
Proton motive force, compounds such as ATP.
Explanation:
Large amount of proton motive force(PMF),the usable enegy for the cell ,are produced during electron transport chain when high energy compound such as ATP pump hydrogen ions against the concentration gradient.
When the protons are transported against their concentration gradient at that time proton motive force is generated.
PMF generates energy for the synthesis of ATP by the phosphorylation of ADP with inorganic phosphate.
The native flora will die off and since that single crop would be considered an invasive species to that specific food web so it could kill off any other species of plants or animals that are living/growing there.
Gases, too much carbon dioxide being lifted in the air. Factories, waste and waste in water. Hope this helps.