The nervous system represents a networks of nerves and cells called neurons that transmit data to the brain and from the brain and spinal cord to distinct parts of body.
It has two parts: the central nervous system and the nervous system on the periphery. The central nervous system is made up of spinal cord, brain and nerves, while on the other side the others nervous system i.e. peripheral made of ganglia, nerves and sensory neurons
beacuse when people number growth too much it can have impact by economic and etc and many people are hunting animals for food and for other thing so we have to balance it