A food chain is a chain arranged
in order of rank, used for animals, it is set up that one, whether it
is an animal or a plant, is dependent on the next as a source of food.
|
In every ecosystem, there must be
a limiting factor such as a predator. If there were no limiting
factors, then the populations of some animals may rise too high, causing
the food chain to be unbalanced. For example, in a Maine forest
if there was nothing that eats the deer, the only way deer would die
would be from old age and accidents. That would cause the deer
population to rise. Then all those deer would eat all the plants,
leaving none or very little for others who need to eat those plants.
|
