Greek astronomers inherited much of their astronomical wisdom from the
a. chinese
b. europeans
c. aztec and maya
d. egyptians and babylonians

there are two main types of historical sources: primary sources and secondary sources. a primary source is something that originates from the past. it can be a chronicle, a piece of pottery, or even a piece of glacial ice that gives us climate data about the levels of atmospheric carbon one thousand years ago.

the answer here would be