Which of the following natural factors is likely to support the information of an oceanic island?

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

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.