If by organism you mean one individual, then not much unless it were in a very small food web.
If you mean one species or population then whatever eats that organism would be the first and most affected by the death, but the effect would tricle through ever level of the food web.
The food chain would expand, and the new organism would have new predators.
Think of the game Jenga. The smaller the organism, the more it will effect the food chain. So it really depends on the organism.
This is a hard queston I would think that the animals before it would have to find a new food source or die out them selves but this is why a food web is more real world than a food chain in the food chain anything after the one that some how just went away they would die off as well
it would mess up the food chain and make every thing go wrong. :) :D :O
Gut
Bacteria would always be the first link in a food chain. This is simply because it is so small and is, essentially, everywhere.
all organism are dependent on plant s directly or indirectly,so posion will spread in each and every level of food chain
an organism that feeds on others in food chain
That would be a 'predator'.
When there is a transfer of energy from living organism to living organism, a food chain is created.
what level of the food chain at which an organism is found is known as its?
The rest of the food chain would collapse and there would be lots of deaths from starvation.