Multiple Choice
Life probably did not originate on the land surface because
A) impacts would have destroyed any life that appeared
B) water was not plentiful on land
C) there was no ozone layer to shield out harmful UV rays
D) organic materials were not present on the land
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q44: For microbes to survive the journey in
Q45: The "bottom-up" approach to creating artificial life
Q46: Why can studies of carbon isotopes be
Q47: Where did the asteroid that is believed
Q48: In 2014, when scientists used a laser
Q50: Aerobic organisms first started building up oxygen
Q51: One theory for the origin of life
Q52: The point in time at which oxygen
Q53: The colonization of land by plants appears
Q54: The most severe mass extinction during the