It can be passed by respiration, aka, through breathing.
They can also be passed through blood, aka, if you consume or ingest someone’s blood.
Natural selection is the process by which favorable traits are passed down through different generations of a species in order to adapt and likely survive within the changing environment.
<em>The Tragedy of Macbeth</em> is a play written by William Shakespeare in which he narrates the ambition of the Macbeth couple to conquer the Scottish throne. To do so, Macbeth murders King Duncan, a fact that demands more deaths to be duly hidden and prevent suspicion. However, the couple begins to suffer from guilt and paranoia which leads Macbeth to become a tyrant.
Lady Macbeth, in turn, begins to hallucinate and sleepwalk. That is the reason why, in Act V, the doctor says, “Unnatural deeds / Do breed unnatural troubles.” Lady Macbeth feels guilty for the deaths of Lady Macduff and Banquo and, while sleepwalking, believes to see blood on her hands. The civil war and bloodbath that begin to take place after Macbeth takes the throne are also unnatural troubles originated from unnatural deeds since Macbeth would have never become a king in a natural way. All the killing that was necessary to keep him in power – and taking someone’s life is certainly the most unnatural action a human being can conceive – takes its toll, depriving him and his wife from their mental health and, later on, their lives, and depriving the kingdom of peace.
