Gene regulations in eurkaryotes
A. Usually involves operons
B. Is simpler than in prokaryotes
C. Allows for cell specialization
D. Includes the action of an operator region

Explanation:

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a. as the temperature increases, the kinetic energy of the gas molecules increases & the molecules move faster & further away from each other.

b. if you decrease the temperature of a fixed amount of gas at constant pressure, the combined gas law reduces to charles's law. in this case, volume will also decrease.

i don't know. if i were you, i would search it up online : d