Are there more yeast then algae?

It's challenging to directly compare the abundance of yeast and algae because they inhabit different environments and serve different ecological roles. Yeast, primarily unicellular fungi, are found in various niches, particularly in soil and on plant surfaces, while algae, which can be unicellular or multicellular, are predominantly aquatic organisms. Algae are estimated to be much more diverse and abundant, especially in marine environments, where they contribute significantly to primary production. Overall, while both are numerous in their respective habitats, algae likely outnumber yeast in terms of species and biomass in aquatic ecosystems.