Answer:
The regulation of an internal environment is called homeostasis.
Explanation:
Homeostasis is when you can maintain a stable inner environment.
it includes more organisms in the ecosystem that would otherwise not be shown in a food chain.
Elevation (it uses different colors to show the elevation of different places such as plains and mountains)
One reason is for an animal to come along and eat it's fruit, so that it can excrete the seeds somewhere else allowing that type of flower/plant to spread over distances :)
