Hydrochloric acid and sodium hydroxide will reaxt to form which two compounds?

Is this a single replacement reaction or there is no

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

In 2002, the rare earth elements mine in mountain pass, california was closed because