Answer Wiki. Sand sharks a/k/a sand tiger, grey nurse and ragged tooth. Their name reportedly comes from their habit of hanging out near the shoreline, trolling the ocean floor where the waves break close to the beach. While they're considered relatively docile and mind their own business, they apparently will attack a human if provoked.
Contemporary energy transitions differ in terms of motivation and objectives, drivers and governance. In a more narrow sense, a sustainable energy transition is the shift by some countries, most notably Germany (German: Energiewende), to decentralised renewable energy, and energy efficiency.
Best Answer: During the light phase of photosynthesis, the photosystems (I and II) use light energy, and as the electrons are excited to a higher energy state using chlorophyll molecules, the two photosystems in the thylakoid membrane pump H+ ions across the membrane creating a H+ gradient in the thylakoid space.