We all know that independent is containing the x and the dependent is the y. Meaning that the y depends on the x.
Hey There! The "SI" unit is 0.001 grams! Hope this helps!
The only way to send information back and forth is to use radio waves. Just like a radio station broadcasts a signal which you can listen to using a radio, astronauts and people on Earth can broadcast information back and forth to each other.
Radio waves are transverse waves.
