Which sequence represents the levels of biological organization from smallest to largest?

a. organism → cell → tissue → organelle → organ system → organ
b. organ system → organ → organism → cell → tissue → organelle
c. organelle → organ system → cell → organism → tissue → organ
d. organelle → cell → tissue → organ → organ system → organism

Answer to all your problems:

The correct answer is B

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JUST ENCASE YOU DIDN'T NOTICE:

cell → tissue → organ → organ system → organism

that is your answer hope this helped :)

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.