Because they use the word 'chain' as a type of metaphor. They use chain as a metaphor because the food keeps on going on and on, as does a chain.
a food chain is what animals eat in a line a other word is a food web
All animals, including man, are part of the food chain.
"Food chain" is typically written as two separate words.
Food web
Producer
No. Food is a common noun.
If you mean food web and food chain, a food web shows the connection of eating habits between many organisms while a food chain shows just one line of interactions.
Apex is the top predator of a food chain.
Zooplankton is an animal. Its included in the food chain.
an animal at the top of the food chain
The Food Chain refers to every species linked together starting at the top with the "producer" species and ending with the "decomposer" species.