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Presumably, each link in a food chain consists of one species on Earth.
The number of species in nature can not exceed the number of creatures of all species.
Assume that each creature requires some finite, non-zero volume of space on Earth; therefore, there is a minimum volume that all creatures each requires.
An infinite number of creatures would occupy infinite space.
Earth has not infinite space, albeit it seems very large to finite creatures like you and me.
Therefore, no food chain on Earth can have infinite links.
What else can I help you with?
Why don't the elements on the periodic table have a whole number as their atomic weight?
Elements exist as isotopes in nature. So their atomic weight is not a whole number.
Do molecular elements exist in nature?
Yes, The elements hydrogen, nitrogen, oxygen, and sulfur are all molecular elements that exist in nature. Due to their reactivity, it is rare to find the halogens and phosphorus in their elemental forms in nature.
Can ideal gases be pressurised infinitely?
No; infinite also doesn't exist (probable with the exception of the Universe).
The atomic mass of iron is 55.847 amu. Why isn't this value a whole number?
because it's an average of various isotopes, in proportion in which they exist in nature
Why is there so many producers?
The Short Answer is: in a balanced, eco-friendly Ecosystem there is an equal number of producers as there exist consumers.
