What are food chains, food webs, and ecological pyramid models?

A food chain is a chain of different animal species that are dependent on the next as a source of food. If one source dies, then the chain starts to break.

Food webs are a system off overlapping food chains. Basically meaning, many food chains combined together.

A pyramid model includes the following:

Hope this helps! :)

it is called the mitotic spindle

i think this picture will you.