How are pristine conditions of the atmosphere determined?
A) Research conducted prior to the Industrial Revolution
B) Seawater samples from deep within polar ice packs
C) Sediment samples
D) coral skeletons

Question

Quizplus · Accepted Answer

There was no research done before the Industrial Revolution. The changes from this time period were already found all over the world in the ocean. Information can be found in the section Marine Pollutants May Be Natural or Human Generated.

How Are Pristine Conditions of the Atmosphere Determined