The answer is eliminated as heat.
Metabolism is the set of life-sustaining chemical reactions in organisms. The three main purposes of metabolism are the conversion of food/fuel to energy to run cellular processes, the conversion of food/fuel to building blocks for proteins, lipids, nucleic acids, and some carbohydrates, and the elimination of nitrogenous wastes.
1. Because kids have time to do everything
The virus will be transmitted through the birds feces and could be spread to other animals and humans.
Unicellular hope this helps
Your nose and your mouth are both a portal of entry into your body. If you cover one and not the other it defeats the purpose because Bacteria can still enter the system. They are both part of your respiratory system.