What are the levels of organization i multicellular organisms

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?

What's the waste product of electrons and pyruvate combining in fermentation?