Creating a proton gradient across the thylakoid membrane in higher plants uses cyclic electron flow (CEF), which primarily serves two purposes: (1) producing ATP and balancing the ATP/NADPH energy budget; and (2) defending photosystems I and II from photoinhibition.
ATP and NADPH are produced by noncyclic electron transport. The single product of cyclic electron transport was ATP. Both steps are required by a plant to produce the required amount of ATP for the Calvin Cycle. The electrons are released by photosystem I and then brought back into the system during cyclic photophosphorylation. However, in non-cyclic photophosphorylation, the electrons that the photosystems emit do not come back.
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The correct answer is rapid onset of respiratory distress.
When a person is exposed to a substance to which he/she is allergic, the immune system reacts by releasing specific chemicals. This constitutes an anaphylactic shock. Symptoms of an anaphylactic shock include rapid onset of hypertension, of neurologic compensation and of cardiac arrest. In this case, the grandson is not breathing, therefore this consists a rapid onset of respiratory distress.
Water fills up spaces under ground because it has no natural shape or size water is infinite so it fills the space of the area it is in such as a bath tub the water fills the shape of it or fills the area of it and then when someone get in it adjusts to the shape of them making the water rise
There is no such thing as pure water, when you buy bottled water you think you're buying pure water but it's the same water.
I'm not going into the scientific facts here but the truth is 'pure' water does not exist because that means the water will have NOTHING in it which means they will have to remove the natural minerals and then the water will interact with any organic materials the water encounters, including air and plastic.
<em>But the water is clean and healthy to drink. Just not pure.</em>
