Two representations of the distribution of electrons in the potassium atom are shown. Which model is useful in showing the reactivity of potassium?
D. Both models because each shows an electron in the outermost shell.

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