Image courtesy of nasa
million people.
, and it has a population of
the country labeled with the number 3 on the map above is
a russia. . 139
b. france 65
c. 47
d. poland 38
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when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave