Before revision: Aquatic biospheres reliant on oxygenic photosynthesis are expected to play an important role on Earth-like planets  with large-scale oceans insofar as carbon fixation (i.e., biosynthesis URLanic compounds) is concerned.
After revision: Aquatic biospheres reliant on oxygenic photosynthesis are expected to play an important role on Earth-like planets endowed with large-scale oceans insofar as carbon fixation (i.e., biosynthesis URLanic compounds) is concerned.