Matter comprises all of them and among them are independent, What are they?

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

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