Answer:
Prions are infectious particles that contain no nucleic acids, and viroids are small plant pathogens that do not encode proteins![.](https://tex.z-dn.net/?f=.)
Fredrick Griffith, He did an experiment with virulent and non-virulent strains of pneumonia. He heat killed the virulent strain, making it harmless and then mixed it with the non-virulent strain. When he inoculated mice with the mixture, the mice died, This meant that the non-virulent bacteria had picked up some genetic material from the killed bacteria - they had been transformed.
Not usually, they are safest in the pouch. If they are really young, they are pretty much attached firmly to their mother's teat so no fall out.
Answer:
Waxing means it's getting bigger while waning means it's getting smaller.