What are new stars that are found in the spiral arms and formed from recycled dead star material known as? O population Il stars
O red dwarf stars
O population I stars
O brown dwarf stars

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

i believe your answer would be c.. : )

look at this it will give you up to 17 answers  

answer; synapse;