The plants must obtain their energy straight from the water column because they are not rooted in the soil like in subsurface flow-built wetlands, which may increase the rates of nutrient and component absorption into the biomass. Due to their stability, they can withstand large variations in ...
Taking into account both the “supply” (meal access points) and the “demand” (low-income students) for free meals, we employed a two-step floating catchment area analysis to compare meal accessibility in St. Louis, Missouri before and during the pandemic in the spring and summer of 2019...