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I think will be A !!!!!!!!!
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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Dolphins eat the equivalent of 4-5% of their body mass each day. The sonar frequency most often used by thedolphins is around 100kHz. Notice thequalitative data are descriptions. Thequantitative data are objective, numerical measurements.
