The electrons that chlorophyll loses in the electron transport chain are replenished by water molecules. These water molecules degrade releasing oxygen and hydrogen, the electrons are then supplied to the electron deficient chlorophyll molecules located in the reaction centre of the Photosystem.
Answer:
The stomata open and close to allow the intake of carbon dioxide and release of oxygen.
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When people don't know how to drive the boat correctly and they loose control.
Answer: They were the first to illustrate building designs as a reference for artisans.
Explanation: