Tilling, Ploughing, Sowing, Manuring, Irrigation, Weeding, Harvesting.
1. The sun - plants - caterpillar - fish - bear
(I already answered but ima answer again)
Answer:
Succession is not ever guaranteed to stop in any area due to the possibility of natural disasters, climate change, and disease. The climax within an area my exist for many years but the area always has the potential to be disrupted by unexpected events that may damage plant life.
Explanation:
One good reason would be that they could give someone, or many people who are in desperate need of a new organ, a second chance at life.