The central nervous system is composed of . The peripheral nervous system comprises .

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.