The following are the types of nervous system and their functions.
1. Parasympathetic- functions as the relaxing response.
2. Sympathetic - functions as the flight and fight response.
3. Autonomic - it functions as the controller of automatic response.
4. Somatic- functions as controling voluntary response.
5. Peripheral- works as motor nerves and sensory which runs from and to central nervous system.
6. Central- works as the main interpretation and center of processing.
The ultimate source of energy (for most ecosystems) is the sun<span>. The ultimate fate of energy in ecosystems is for it to be lost as heat. Energy and nutrients are passed from organism to organism through the food chain as one organism eats another.</span>
