Which statement best describes the nucleus of an aluminum atom?

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

What substance has a mass of 9.5g and volume of 2.1cm^3

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?