Solve it like the other side I’ll add extra points

In stage 2 farmers used the land primarily to grow food for their families and their small communities.

[ou.01]which of these is the most likely use of an electromagnetic wave which has wavelength shorter than microwaves but longer than visible light? o heat food safely o neat food safely o take images of bones and teeth o transmit radio and cellular phone signals o take images of bones and teeth o transmit radio and cellular phone signals o detect the location of objects which emit heat

If scientists only detect p waves in a certain layer of earths interior what does that tell us?