Take the global trends quiz. click on "answers" at the bottom of the quiz and check your work. what is expected to happen to the number of people sixty years and older in the developed world by the year 2050? to what can this be attributed? (site 1)

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?

Dan made the table shown to describe two different relationships between animals. organism interactions relationship a relationship b one organism lives inside the organism it feeds off no organism is harmed which of the following statements is most likely correct?

Which statement is a physical property? becomes moldy quicklyeasy to digestconducts electricity poorlydoes not burn