The statement that best describes ecological succession is that it always occurs in a predictable pattern. The process is also slow. The correct answer is C.
Tourism can affect the swamp water, if traveled on a boat, with all the oil and stuff that is needed to get the boat running, and over hunting, can slowly kill all the crocodiles that live there affecting the crocodile population! <span />
Amount of wear, and how long they are may contribute with age and maybe even coloration and pigment.