At the normal temperature and pressure 1 cm cube sample of hydrogen and 1cm cube sample of oxygen is given. find the Rati of the molecules contained in the sample of hydrogen to the number of sample of oxygen.

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How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.