List THREE human activities that contribute to acid rain?

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

Which elements are in the substance that makes up about 60% of the male human body

Dna replication allows the basic.units of.heredity found on segments of dna called to be passed on from parent to offspring.