Questions

Farsightedness is more properly called Hyperopia.

Claude Bernard was a French physiologist, who first recognised plant stomata opening and closing to maintain homeostasis.

In 37 BC, Octavian became the most powerful man in the Roman Empire for 44 years under the titles of Augustus, which meant 'holy' and imperator, meaning 'Victorious general'. He also called himself Princeps, 'first citizen of the state'. The period of Roman history beginning with his rule upto A.D 284 is called the principate. His rule and the period following it were  peaceful and  are known in history as 'Pax Romana' which means 'Roman Peace'

Headache and Heartache are the only two words that of more than 2 letters that both begins and ends with the letters "HE" in the same order.

Sound waves cannot travel through a Vacuum.

A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.