It is called a population. hope this helps.
The vast majority of energy in food webs originates from the sun. Energy is not recycled in ecosystems and each ecosystem requires a continuous input of energy to sustain it. There is some energy transformed at each level of the food chain or food web in an ecosystem.
I think this is true because the species evolved and adapted to the natural environments so perfectly that when a geological change such as global warming, the asteroid that hit earth etc. all affected climate, food or water.
The Nervous System is the power source of your body. Using electrical impulses, your nervous system helps control your muscle movements. The two main functions are the Sensory(afferent) division- which brings information to your brain. Then your Motor(efferent) division- which sends signals out.
