When does bundle branch block occur in a ekg

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

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.