Answer :
Well as you move along a food chain, energy is lost due to excrement, growth, respiration, etc. So having a really long food chain would mean very few nutrients from the original plant would actually make it to the apex predator. From that knowledge, C looks like the answer. Nutrients definitely aren't lost from an ecosystem, and I don't see how recycling nutrients or energy would be a limiting factor on the length of a food chain, since it can happen at any point on it
There are no more than five species in an ecosystem due to the conversion of food into growth by an organism is not very efficient. Thus option C is correct.
What are food chain ?
The food chain is a linear cyclical event where the transfer of nutrient and energy occur from one organism to the other.
Trophic level is defined as the stages involve in food chain which start with producers, primary, secondary and tertiary consumers.
The major parts of food chain are the sun is the primary source of energy.
Secondly producers include autotrophs such as plants, phytoplankton, cyanobacteria represent first tropic level in a food chain.
Consumers includes herbivores, the primary consumers which eat plants, carnivores are animals which eat other animals, parasites that live on other organisms, others are scavengers eat dead decaying matter.
Decomposers integral part of food chain get energy from dead or waste organic material.
Learn more about ecosystem, here:
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