Answer:Organisms rely on each other to sustain the ecological environment, something that humans have been lacking in. So, in general, organisms are interdependent because they have no choice. There are more particular instances (mutualism, symbiosis, etc.) where the connection is more local and direct.
This type of movement of the unicellular organisms is called twitching motility. A small filament on the top of the bacterial cell enables the bacteria to move in this fashion. Twitching motility is key to pathogenesis and forming biofilm in bacteria.
