How are organisms interconnected?
Organisms continually evolve by growth and division.  Thus, species continue to be created or lost due to new genetic mutation or loss of all members of that species.  Since the world is 4.6 billion years old, and life came into being 3-4 billion years ago, it's not surprising that there are so many life forms available, it's a matter of time and the presence of ecological niches.  The study of organisms impact on each other and their interaction with the environment is called ecology and it's a large field of study.  Organisms interact usually in a food web; for example algae need light and CO2 to grow, while plankton feed on algae.  Small fish feed on plankton, and large fish feed on small fish.  This is a prototypical example.
To start with, hold an event and get everyone on your taget list in the same room...networking starts face-to-face