Organisms need ___ to conduct essential life activities

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 in scientific term why the salty popcorn causes this thirst

What makes a dominant allele different from a recessive allele