Volcan activo en nicaragua

How many chromosomes are in a gold fish?

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?

In which state was more than 100 billion tons of coal mined in 2005?