Answer:CT scan
Explanation: CT(computerized Tomographic) Scan is a type of scan that is used to view bone fractures throughout the body by using a series of XRAYS which views from different angles. It has also been used to view complex bone fractures and injuries,liver enlargements,Heart diseases and cancers and other forms of tumors,it can also detect subatomic particles emitted by weakly radioactive glucose as it is consumed by the brain.
Because polymers are covalently bonded material, and metals are metalicly bonded material.
Covalent bonds do not let atoms exchange electrons like metalic bonds do.
" The endocrine system is the collection of glands that produce hormones that regulate metabilism, growth and developement, tissue function.." and others.
