when the drugs source of origin and chemical structure has been intentionally altered ti achieve a new beneficial property this drug is known as

≅200-130 milions years ago pangea splited in 2 continents

not sure if this is what you'r looking for nnew= nold

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 won't lie i don't know so go online and ask google thats what i do