If you can answer these by 2/18/21 I will mark you brainliest

What layer of the atmosphere is directly above the troposphere?

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

Which of the following are correct values for the ideal gas laws constant r