The vibration caused by p waves is a volume changes, alternatimg from compression to expansión in the direction that the waves is traveling.
I would assume it is Oxidation since it would have an impact on metals t hat oxidizes in the weather
Answer:
A. cell walls
Explanation:
Plants have cell walls but animals dont.
Answer:
The answer is 0.83 seconds.
Explanation:
The formula of free fall is following:

Where g=9.8 m/s^2 and t=2 seconds, the rock takes:

19.6 meters. This is the half distance of the cliff. The whole distance is 39.2 meters. So it takes:

2.83 second to fall down completely. The rock takes the second half of the cliff in 0.83 seconds
Well I think B hope this helps