Multiple Choice
About 1.5 billion years ago, oxygen began to accumulate as a byproduct of ____, drastically changing the composition of the Earth's atmosphere.
A) biosynthesis
B) cellular respiration
C) methane synthesis
D) photosynthesis
Correct Answer:
Verified
Correct Answer:
Verified
Q17: There is convincing evidence that there was
Q18: Life on Earth probably evolved in the
Q19: The hypothesis that best explains how the
Q20: Describe the basic processes and timeline that
Q20: Deep-sea fossils suggest that life evolved within
Q21: All of the following statements are true
Q23: Of all the planets in the solar
Q25: The ocean originated from:<br>A) volcanic gases.<br>B) radioactive
Q26: Which of the following best describes biosynthesis?<br>A)
Q27: Describe the primary (or traditional) branches of