You measure the depth to the bottom with a lead line and find out the bottom is 6000 meters deep. how many seconds would it take for a seconds would it take for a sound signal to leave the ship, bounce off the bottom and return to ship? show your work

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