Four at the most, and never any fewer than three.
three
It depends. A food chain could be fairly long with about four or five steps in it, or a food chain could have just two.
3 (apex)
four
I guess it depends on the food chain, but humans are just about on top all the time if that's what you mean.
Monkeys can only occupy one which is the secondary consumer
5
A food chain does not go all complex like a food web does, meaning it has anywhere from 3-... an example would be : grass -> rabbit -> fox
A food chain can only be up to 5 trophic levels in length, including the producer. Only a small proportion of the previous organism's energy is passed down through trophic levels to the next organism. This diminishes the energy available, so there is little or no energy to be gained after the 5th stage of a food chain. :)
It is important for an organism to belong to a lower trophic level because the lower levels receive more energy for their food. Organisms on the higher levels also rely on all the lower levels.
how many organisms are in the first food chain
Food webs are made from many food chains. A trophic level in every food chain is a stage where energy is transferred from a lower level to the next higher level. Trophic levels include producers, consumers (primary and secondary), decomposers.