Even on the evolutionary time scale of tens of millions of years there is such a thing as being in the right shape at the right time. An anatomical difference in the ability to seize the moment, ...
Two groups, or clades, of grasses that once had a common ancestry diverged, ultimately leaving the PACMAD clade more predisposed to evolve a more efficient, "C4" means of photosynthesis when CO2 is ...
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