Multiple Choice
Scientists agree there was a geological separation of the Pre-Cambrian and Cambrian periods, suggesting a major evolutionary happening, but they
A) disagree on why it occurred
B) agree it was caused by increased radiation
C) agree it was caused by internal organization of DNA
D) agree it was caused by world-wide cataclysmic events
Correct Answer:
Verified
Correct Answer:
Verified
Q28: The first animals in the Cambrian had<br>A)
Q29: The first fish-like vertebrates in existence 500
Q30: All of the following hypotheses have been
Q31: Homodont toothed animals show several different sized
Q32: The first nucleated life were the eucaryotes
Q34: List the major happenings from first life
Q35: Therapsids show transitional status between reptiles and
Q36: All of the following hypotheses have been
Q37: An example of analogy in evolution would
Q38: Angiosperms are plants with flowers.