MEDAL!

We know that pollution continued during the time of the first advanced civilizations because:

fossils show the evidence

samples of glaciers show increases in air pollution

we can do testing on the carbon samples

recorded evidence was kept by tribal leaders

Question

MEDAL! 

We know that pollution continued during the time of the first advanced civilizations because:
		
fossils show the evidence
		
samples of glaciers show increases in air pollution
		
we can do testing on the carbon samples
		
recorded evidence was kept by tribal leaders

anonymous · Answer

I am going with "C."

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