The ratio of amounts of H2S needed to precipitate all the metal ions from 100 mL of 1 M AgNO3 and
100 mL of 1 M CuSO4 will be

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature