Multiple Choice
The Precambrian witnessed the development of
A) the first atmosphere.
B) the ozone layer.
C) photosynthesis.
D) photosynthesis,an oxygenated atmosphere,and the ozone layer.
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q51: The fundamental time unit representing a major
Q52: The isotope most useful for dating rocks
Q53: The Cenozoic era represents a period of<br>A)almost
Q54: Sediments deposited in an even,horizontal manner illustrate
Q55: Relative dating tells us the<br>A)time gaps that
Q57: What types of events ended the Paleozoic
Q58: In dating a mineral,what is meant by
Q59: The birth of the San Andreas Fault
Q60: Which isotopes are most appropriate for dating
Q61: To help determine the age of rock