Do you believe that the safe drinking water act was worthwhile? How would our country be altered if it was not in effect?

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

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called