Whales use their lower jawbone to the middle ear. whereby they can ear clearly while they are in the water. Human ears and dolphins ears they work the same . They receive sound directly from the air.
In similar way dolphins and human ears are placed in basic anatomical location which is same as on the head. Without a medium hearing is not possible.
The medium sound for human is air. Sound travels 343 meters per second in air and 147 meters per second in water. The most effective way of transmitting sound waves is through water.
We can say that the sound will be fast to travel in medium if the molecules are closer.
I think it would be both (man-made or natural disaster)
He and Horatio hide as the procession approaches the grave. As Ophelia is laid in the earth, Hamlet realizes it is she who has died. At the same moment, Laertes becomes infuriated with the priest, who says that to give Ophelia a proper Christian burial would profane the dead. ... Hamlet storms off, and Horatio follows.
The Benedict's solution or the Fehling's solution is a chemical solution with clear blue color, which is a combination of the sodium citrate, sodium carbonate, and cupric sulphate pentahydrate. The Benedict's solution is used to test for the presence of the reducing sugars, such as glucose. When it is added into a solution and warmed, and it changes the color to orange, it confirms the presence of the reducing sugar in the testing solution.
Hence, the maple syrup contains reducing sugar.