This is in Biology. We as humans can modulate our voices to mimic certain non-human sounds (ex: other animals, machines, electronics, etc...). Other birds like the lyrebird can also do it. My question is, can other primates/apes do this as well? Can chimps be trained to copy sounds?

Question... if something external hit the planet, ejecting debris that eventually formed into the moon, why is the moon so far away? Or, shouldn't the ejected pieces eventually fall to the planet and merge with earth again?