Which two neurotransmitters have roles in appetite suppression? A.) dopamine; acetylcholine

B.) dopamine; norepinephrine

C.) serotonin; GABA

D.)serotonin, glutamate

what's the question ?

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.

the answer is c because it is most logical.