Last Updated：2025/12/29
Sentence
Oxygen
levels
on
Earth
skyrocketed
2.4
billion
years
ago,
when
cyanobacteria
evolved
photosynthesis:[…].
The
evolutionary
precursor
of
photosynthesis
is
still
under
debate,
and
a
new
study
sheds
light.
The
critical
component
of
the
photosynthetic
system
is
the
“water-oxidizing
complex”,
made
up
of
manganese
atoms
and
a
calcium
atom.
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Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis:[…]. The evolutionary precursor of photosynthesis is still under debate, and a new study sheds light. The critical component of the photosynthetic system is the “water-oxidizing complex”, made up of manganese atoms and a calcium atom.
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