Answer:
In optics, the refractive index of a material is a dimensionless number that describes how fast light travels through the material. It is defined as n={\frac {c}{v}}, where c is the speed of light in vacuum and v is the phase velocity of light in the medium
They do not have a tail and they have a webbed type of feet that helps them leap, they have smooth skin as well.
Answer:
I'm liking D for the third one but you might be correct.
Explanation:
Ions would require a gas to remove electrons
Energy is when bonds are broken
Carbon doesn't comprise of water
Polymers are comprised of Carbon and Hydrogen, among other things, so that would he the correct answer
The Potential Energy of an object depends upon its position.
