Distinguish between pure and impure substances.​

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

What is the mass of each element in a 324.8 sample of co2

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