Two books that changed the science of astronomy and the world nicholas copernicus isaac newton.
select the best answer from the choices provided.
a) the three laws of planetary motion, principia astronomica
b) de revolutionibus, principia mathematica
c) leviathan, principia mathematica
d) principia mathematica, leviathan

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

according to greek mythology, persephone, the queen of the underworld, was the daughter of zeus and demeter, the goddess of harvest and fertility. she was also called kore, which means "maiden" and grew up to be a lovely girl attracting the attention of many gods.

explanation: