Multiple Choice
Oxygen did not accumulate in the early atmosphere until it reacted with reduced materials, especially ________, in the oceans.
A) hydrogen
B) elemental sulfur
C) ferrous iron
D) nitrate
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q30: Describe the hydrogen hypothesis and why it
Q31: Because DNA-DNA hybridization reveals subtle differences in
Q32: Which statement most closely expresses our present
Q33: Compared with today, the temperature on Earth
Q34: How did cyanobacteria, oxygen, and ozone impact
Q36: Based on the phylogenetic tree below, which
Q37: The 16S rRNA gene sequence is an
Q38: LUCA is<br>A) the last universal common ancestor.<br>B)
Q39: The earliest stromatolites were probably formed by<br>A)
Q40: The early energy reactions used hydrogen, which