How do conduction and convention differ?

a) conduction can move through empty space to transfer heat; convention cannot.
b) conduction dose not require objects to have direct physical contact; convention does.
c) conduction requires objects to have direct physical contact; convention does not
d) conduction transmits heat through electromagnetic waves; conduction does not

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