Author Question: Oxygen did not build up in the atmosphere as soon as life began to produce it because the oxygen was ... (Read 59 times)

Yolanda · **on:** Jul 27, 2018

Oxygen did not build up in the atmosphere as soon as life began to produce it because the oxygen was pulled back out of the atmosphere by reactions with surface rocks.

Indicate whether the statement is true or false

Question 2

The names of the seven days of the week are based on

A) the names of the seven planets closest to the Sun.
B) the seven most prominent constellations in the summer sky.
C) the names of prophets in the Bible.
D) the seven naked-eye objects that appear to move among the constellations.