Which of the following is the best explanation for why finches on one of the islands in the galapagos have large beaks while finches on another island have small beaks?
a.
over time, the finches on the island adapted as a result of competition for resources.
b.
finches migrated until they found finches with similar beak sizes.
c.
finches spontaneously changed their beak size in order to better access food supplies.
d.
finches wit

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.