Geologists believe that ____________________ are the remains of reef structures from one of the first photosynthesizing organisms.
Correct Answer:
Verified
Q47: Areas of buried shield rock with younger
Q48: _ organisms rely on external sources of
Q49: The newly-formed Earth's atmosphere was very different
Q50: The nucleus or foundation of a continent
Q51: What is one characteristic of Archean rocks?
A)
Q53: Which event did not occur in the
Q54: The _ forms the exposed part of
Q55: The three intervals, from oldest to youngest,
Q56: Early atmospheric gases were emitted because of
Q57: The earliest crust was probably _.
A) rich
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