#12- ill mark brainliest, thanks, and give 5 stars

List four observations that indicate that a chemical reaction may be taking place

How have the greenhouse gasses increased from the year 2000 to 2018

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