What occurred approximately 500 million years ago?
A) the extinction of the dinosaurs
B) the Cambrian explosion
C) the rise of mammals
D) the birth of the first humans
Correct Answer:
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Q1: Which one of the following is NOT
Q2: Humans belong to which branch of the
Q3: The phylogenetic tree of life was established
Q4: Life in the universe could form:
A) after
Q7: All terrestrial life is _-based.
A) carbon
B) hydrogen
C)
Q8: Which of the following is the study
Q9: If we model the history of Earth
Q10: Why was the impact 65 million years
Q11: Complex microorganisms that have complex DNA enclosed
Q11: Terrestrial life is carbon-based and requires _
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