What were Darwin's views on the relationships between various organisms?

Darwinian theory states that within an ecoclimate/system an ubundance of organisms interact depend and compete for survival.


Some even co-exist this is known as symbiosis,where both organisms have become mutually dependant on each oters existance for survival.What were Darwin's views on the relationships between various organisms?
He believed that depending on where things lived, they would interact with the other biotic things in their environment, and sometimes they would need to acclimate to stay in the same environment, as the things around it. For example, in the Galapagos Islands, there were birds that had the same beak sizes, meaning they ate the same things, but then one of the birds acclimated so that it would not be killed off from that certain environment.