The the three the Jana jd aha do w she ka shw sis sis do

Find the mass in grams of 1.37x1020 particles of h3po4

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

The excretory system,need answers for all: )