Acrosswise elongation of cells within the stem will produce?

How are gene and protein sequences used to classify organisms?

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

On his trip to the galapagos islands, darwin determined that animals on the islands