I don’t quite understand what your asking but if your asking if it’s a mystery then no it isn’t but if this was not the answer you were looking for I suggest you put it another way that makes more sense
The break down of carbon based molecules into smaller molecules
<span>It could lead to overfishing, since more fish have to be caught due to the high mortality rate.</span>
Answer
The main reason being the amount of food available.
Explanation:
Think of it this way:
If an animal is trying to find food but another species is looking for the same prey then its going to be increasingly difficult for the species to find prey and if there's not enough of the prey species then the population of the predator to go down.
That is why its considered a limiting factor.