Although coal is Kentucky's primary energy source, the state also produces oil and natural gas
That means like oxygen for like breathing in your mouth
Answer:
The first one in column 1 goes to the 4th one in column 2
The second one in column 1 goes to the 1st one in column 2
The third one in column 1 goes to the 3rd one in column 2
The fourth one in column 1 goes to the 2nd one in column 2
Explanation:
They are electromagnetic waves because mechanical waves have to be physically created by something, while electromagnetic waves are just emitted without any effort or force.
