Answer:
B
Explanation:
By looking at how seismic waves change speeds as they travel
through Earth
My sample would be 4000 years old because on my graph, I had about 9 Virtualium left at trial 4 so I am guessing that it would be 4000 years old.
Answer:
A. have subjects wear the shoes in an experimental trial to see if symptoms improve.
I think its A. it cant be C or D b/c we are measuring the distance between Earth and Saturn, not the speed.
To finish calculating the frequency of an electromagnetic wave, you need the wavelength
