Answer:
pH = 3.0 ya that's it......
Traveling upwards of 200 mph or 320 km/h, and accelerating in a matter of seconds, germs from a cough or sneeze can travel a great distance very quickly.
Answer:
superstition
Explanation:
Because there is no scientific reason behind it and no connection of it to science.
When perfume is sprayed in a room the particles of perfume diffuse with the particles in the air.