What is the issue with the use of the term ‘father' in the beginning of the scene? What does it reveal about the characters of Hamlet and Gertrude?

the sun warms our planet, and with the moon, creates the tides. the moon orbits the earth and in turn, the earth orbits the sun. because they appear to be the same size in the sky, the sun, earth and moon work together to create eclipses. when the moon is directly in between the earth and sun

misty passage from the question

a)   it explains that many people died because medicines and medical practices were not effective.