However, this analysis did not consider the presence of mineral dust INPs and biological INPs in the atmosphere. The concentrations of mineral dust and biological particles are likely higher than the concentrations of microplastics for most atmospheric conditions, and mineral dust and biological INPs can cause ice nucleation at warmer temperatures than microplastic INPs. These combined effects will likely limit the effect of microplastics INPs on cloud glaciation for most atmospheric conditions. Nevertheless, additional studies are needed to consider these competing effects.