How can the crust be affected by convection in the mantle

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 element that has the greatest electronegativity is

Type the correct answer in each box.balance the chemical equation.__ n203 ➡️ __ n2 +__ o2