With floral characteristics, can one predict the type of pollination that can occur in a flower?

Which layer will become saturated first when rain falls?

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 organ systems are working to you cool down after a workout?