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Gaps in the rock record are called
released oxygen into the air
True
eons
unconformities
True
younger layers are at the bottom and older layers are at the top
False
True
The longest length of time on the geologic time scale is
released oxygen into the air
True
eons
unconformities
True
younger layers are at the bottom and older layers are at the top
False
True
What did cyanobacteria do for our planet?
released oxygen into the air
True
eons
unconformities
True
younger layers are at the bottom and older layers are at the top
False
True
The Permian extinction occurred at the same time as the largest known volcanic eruption.
released oxygen into the air
True
eons
unconformities
True
younger layers are at the bottom and older layers are at the top
False
True
Absolute time is stated in years.
released oxygen into the air
True
eons
unconformities
True
younger layers are at the bottom and older layers are at the top
False
True
The Hadean Eon was a calm time in Earth's history.
released oxygen into the air
True
eons
unconformities
True
younger layers are at the bottom and older layers are at the top
False
True
The Impact Hypothesis states that a large asteroid hit Earth and triggered climate change.
released oxygen into the air
True
eons
unconformities
True
younger layers are at the bottom and older layers are at the top
False
True
The principle of superposition states that
released oxygen into the air
True
eons
unconformities
True
younger layers are at the bottom and older layers are at the top
False
True
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