Answer:
chromosomes because they carry the DNA.
Explanation:
1. The central nervous system including brain and spinal cord.
2. The peripheral nervous system including nerves coming out from the brain and spinal cord, i.e., cranial nerves and spinal nerves.
3. The autonomic nervous system including sympathetic nervous system and parasympathetic nervous system.
A balance of organic and inorganic materials
When a muscle contract, it will become shorten. To kick a ball, there are many muscles used for moving the leg. Muscle from the thigh will move the lower leg and the power of kick comes from this muscle group. The muscle in the lower leg will control the feet and determine whether kick using the front or side of the feet.
Since the muscle in one side contract, the opposite muscle in the muscle pair will be flexed. The muscle in flex condition will be lengthened.
