Billions of years ago, how did earth come to have an oxygen-rich
atmosphere?
a. volcanic outgassing
b. comet impacts
c. algae activity
d. earth's cooling
e previous

How is thomas jefferson related to the war of 18122 a. during his term, he made defense cuts that left americans at a military disadvantage b. as madison’s vice president, he served as a commander in chie c. he convinced congress to declare war though his propaganda efforts d. he authored the treaty ghent which ends the war

Other in the u. s. supreme court, all federal courts were established bya. the constitutionb. congressc. presidential executive orderd. the states

One of the most significant problems facing governments with low gdp is that a low gdp often results in