Suppose a father and mother claim that they have been given the wrong baby at the hospital. Both parents are group A. The baby they have been given is group O. Could the baby be theirs?

In which process is oxygen absorbed by an organism asap apex

Can someone me with this and tell me what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

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?