For a theory on the formation of our moon to be accepted, it must explain all of the following facts except:
a. why the moon has a lava 'ocean'
b. why the moon and earth have similar oxygen isotypes and trace elements.
c. why the moon is so large compared to earth.
d. why the moon's iron core is so large compared to earth's.

All of the following were weaknesses of the articles of confederation, except: a) the central government was not permitted to regulate state, interstate, or foreign trade. b) the central government was not permitted to borrow money. c) the central government had little ability to regulate money. d) the central government had no ability to tax.