In the light-dependent reactions, what happens to water after a pair of electrons are taken from it? (pls help)

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat

Which of these parts of the membrane large moecules pass through it ?

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity