An example that shows how organisms are dependent on each other would using a food chain as an example.
• mouse eat grass and drink water ( which is nonliving)
• mouse gets eaten by fox
• then fox then eaten by coyote and the cycle continues
However is one of these organisms have low population it will be difficult for the others. For example if there is a low population of coyotes then the fox population over populate same goes for if fox are low in population then the mouses become over populated hence diseases could spread from the mouses. The organisms must keep each other in check
The most likely meaning of this world would be c - ancient. This is probably true because when you think about it, when you're talking about an archetype, you're not talking about something dead nor extinct, neither about ruins, but you might be talking about something ancient - and the same goes for archaeology.
If it’s referring to sea floor spreading then the answer is D, I hate analogies but I think it’s talking about the mantle convection that slowly breaks away at the lithosphere
The answer your looking for is the insula. Hope this helps.