Are viruses capable of photosynthesis?

What is the role of fadh2 in cellular respiration

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from

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?