Which statement is true about oxidation-reduction reactions? a. every oxidation must be accompanied by a reduction. b. there are four commonly accessed oxidation states of carbon. c. dehydrogenases typically remove two electrons and two hydrides. d. they usually proceed through homolytic cleavage. e. during oxidation a compound gains electrons.

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

Adepositional also feature that forms where a stream enters a lake or an ocean is a

Which property of water causes water drops to bead on a freshly waxed car?