Is the dna in all our cells the same ? Is ALL our dna "turned on" in every cell?

As the human population grows, what happens to our natural-resource requirements? o they increase o they decrease o they do not change. they go in cycles

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement

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?