Extend studying the DNA of ancient organisms is a window into a distant past according to Dr. Shibin discuss how what you have learned about amphioxus supports the statement

Organisms that successfully adapt will leave to grownone of the above

How many types of rock can form from the rock cycle

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?