The spinal cord The central nervous system is composed of the spinal cord and the brain, The spinal cord is a cylindrical cord from which the spinal nerves extend, The spinal cord is 40 to...
The electricity The electricity is produced from the electric charges when these electric charges are stable on a body, the produced electricity is the static electricity and when the electric charges flow through a...
The human brain The central nervous system is composed of the brain and the spinal cord, the brain is a nerve block containing millions of the nerve cells (the neurons) and it is the...
The photosynthesis process The green plant makes its own food by the photosynthesis process in its green leaves as they contain the chloroplasts, The green plant is called a producer organism, and the plant...
