Answer:
Continually repeat themselves. / Cycle back.
The products of the Calvin and Krebs cycle loop back to where they began. Acetyl-CoA goes into the Krebs cycle, ends as oxaloacetate, then gets turned back into Acetyl-CoA. And so on and so forth!
The virus will be transmitted through the birds feces and could be spread to other animals and humans.
No, because it could clot to much in the patient it's going to and could cause other problems.