The answer is <span>fermenting plant material to produce ethanol. The farmer was able to come up with a new product besides his harvested plants.He can now make this as a business and start to gain profit. Ethanol can also be linked as a source of material to make other related products. </span>
Answer:
i think the answer would be that everything else will change and adapt differently because something is missing.
It serves as a barrier to biological activity.