The first complex life appeared on Earth about 0.5 billion years ago during the
A) Jurassic Period.
B) Mississippian Period.
C) Cambrian Period.
D) Precambrian Period.
E) Neolithic Period.
Correct Answer:
Verified
Q11: Life
A) reproduces itself.
B) contains information necessary for
Q12: The habitable zone is
A) the region on
Q13: DNA molecules contain patterns for the production
Q14: The most likely low interference region of
Q15: The processes of life
A) extract energy from
Q17: When estimating the number of technologically advanced
Q18: What is important about the habitable zone
Q19: Life on Earth is believed to have
Q20: A single human cell encloses about 1.5
Q24: DNA is coiled into a tight spiral
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