More dissolved oxygen is present in water with a lower temperature compared to water with a higher temperature. The reason for this inverse relationship between dissolved oxygen and temperature is that the solubility of a gas in a liquid is an equilibrium phenomenon.
People would rush to the store to buy supplies and there might not be enough for the "last minute noticed" people
All are gases so no visible reaction persay, unless in closed quarters and then massive pressure.
I would say that it would probably be: The Sun pulls on Earth as Earth moves around the sun.
Sorry if I'm wrong <3
