Two spheres, labeled a and b, have identical masses, but are made of different substances. the specific heat capacity of sphere a is 645 j/(kg.°c ) and that of sphere b is 240 j/(kg.°c). the spheres are initially at 21 °c; and the same quantity of heat is added to each sphere. if the final temperature of sphere a is 74 °c, what is the approximate final temperature of sphere b?

The best answer i can think of is b

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.