Multiple Choice
Which statement about the atmosphere and life on Earth is correct?
A) Life on Earth arose once oxygen was present.
B) Life on Earth arose once temperatures of gases warmed.
C) Life on Earth arose before oxygen was present.
D) Life on Earth arose once the products of photosynthesis such as oxygen were present.
Correct Answer:
Verified
Correct Answer:
Verified
Q2: The major evolutionary episode corresponding most closely
Q47: A difficulty in presenting evidence for a
Q48: What is critical to understand about the
Q49: The existence of evolutionary trends,such as increasing
Q51: Hox genes are a group of related
Q53: Which effect of continental drift would allow
Q55: In the 5 to 7 million years
Q56: Which of these fly organs, as they
Q56: Which group of tetrapods had the first
Q57: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7910/.jpg" alt=" Figure 23.3 -According