Plants that provide energy in the form of nutrient molecules are known as

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

answer; the code in musculoskeletal system subsection is associated with deep tissue possibly to the bone;