Which of the following must be cleaned and sanitized

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Based on its chemical properties, identify the position of each chemical family on the periodic table.

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