Why did oceans not exist on earth nearly 4 billion years ago?
a. no water molecules were present.
b. water remained a gas because earth was very hot.
c. water existed as ice because earth was very cold.
d. there was no oxygen gas in the atmosphere.

for e2020. the answer would be some directions from the mountain range so we can find mt. whitney. to locate which direction is north, you should use a   compass. this would not only find mt. whitney, but also becuase of this long paragraph you would get points because it's not like anyone actually reads your work becuase once they read the first sentence it sounds dumb enough to not read becuase i'm not good at answering this but the answer is compass for your benefit.

for e2020 ; -;

answer (a) more rain in u s and less rain in australia and asia