(1) normally harmless cat antigens stimulated
<span>the immune system</span>
<span>The unifying principles of virology are: All viruses are made of a nucleic acid molecule in a protein coat, all viruses are incapable of replicating themselves and must infect a host cell to do so, and all viruses must have genomes that provide mechanisms for them to work.</span>
Titan or Kepler 22-B is my guess .-.
Answer:
All organisms respire in order to release energy to fuel their living processes.
Explanation:
The respiration can be aerobic, which uses glucose and oxygen, or anaerobic which uses only glucose. Because this process occurs in all life, we call it a universal chemical process.
