During the Cenozoic Era, rapidly diversified to fill the ecological niches left by the Mesozoic/Cenozoic mass extinction

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

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?

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?