DNA polymerase is an enzyme that adds the RNA nucleoides to help build the RNA molecule
I do not think the industrial and agricultural revolutions could have occurred without the environmental costs. The industrial revolution in the 18th century occurred at a time in history when people where not aware of the consequences of their actions or the consequences of the widespread use of fossil fuels. Even if they were aware the technology would not have been present to harness power from natural renewable sources of energy.
The answer would be A. Rock Formation because after the crust is cooling it starts to form a new rock formation, which would be the next step in the project. Hope this helped! :D
Climate change is most commonly measured using the average surface temperature of the planet.
Hope this was helpful. :)