Herbivores
Unstable
Producer
That ultimately depends on how big the food web is (how many chains were linked together to create the web). There must always be more than one, though, to keep a food web (and the ecosystem(s) it describes) alive.
the food web for the pacific is: plankton-plant-small fish-big fish-shark-squid-whale So that's the food web of the pacific
New energy enters the food web, and matter is created as it moves through the web
Plant -> Chipmunk -> Lynx
a plant(producer)
A food chain is different from a food web, but a food chain always starts with a producer (plant) and it ends with a decomposer. I don't think a food web has a beginning or end.
A secondary consumer in a food web is the carnivorous or omnivorous animal that feeds on the primary consumer, which is the organism (normally a plant) that eats the producer (normally a plant).
That ultimately depends on how big the food web is (how many chains were linked together to create the web). There must always be more than one, though, to keep a food web (and the ecosystem(s) it describes) alive.
a producer is a plant that starts a life cycle of an food web.