What have scientist learned about the classification of amphibians, birds, and reptiles by studying their evolutionary relationships?

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

Which process can increase the rate of greenhouse gas emissions into the atmosphere in response to a decrease in albedo

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?