Recall the lac operon model and how it explains the control of messenger RNA production and the regulation
of protein synthesis in bacterial cells. NAME IT by.
specifically stating whether it is an inducible operon OR a
repressible operon -
Name clearly_the key components in this operon by
name and explain how the selected prokaryotic Lac
operon works by including descriptions of events that can
turn genes "on" and "off."

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

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.