If we want to know the velocity that an object is traveling, we must know the
a. distance and time
b. distance and the speed
c. time and the direction
d. direction and speed

Edit the post so i can see the letters for each answer, and increase the points required so i'd be able to answer it.

Answer (d) valerie rides her bike south at 8 kilometers per hour///owen jogs south at 8 kilometers per hour ;

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.