Question

I need help on this question​

Answer 1

It slows down

Step-by-step explanation:

Waves can move easily through gases, but solids are more dense than air, so it is harder to move through. (If you talk to someone that is in front of you, or in a different classroom with a wall between you, you have to talk louder for them to hear you)

Hope this helps

Answer 2

It’s the last one cause in a solid there all packed together so the go slower