LekhoriLekhoriThat which precurses: a forerunner, predecessor, or indicator of approaching events.
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.
One of the compounds that participates in the chemical reaction that produces another compound.
Caused by the following symbol.
Inherited from Middle English precursour, from Middle French precurseur or its etymon Latin praecursor (“forerunner”). By surface analysis, precurse + -or.
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