Blood needs to flow faster around the body in order to supply the muscles with oxygen for respiration
Answer:
680
Explanation:
When the P680 special pair of photosystem II absorbs energy, it enters an excited (high-energy) state. Excited P680 is a good electron donor and can transfer its excited electron to the primary electron acceptor, pheophytin.
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Well some similarities are that vertebrates have no back bone but on the other hand the <span>invertebrates have no backbone</span>