The seismic waves that travel through earth’s interior are waves.

The seismic waves that travel through Earth’s interior are known as the P waves and the S waves, these seismic waves have differences, first the P waves compress and enlarge the foundations(rocks) as they move through it, while the S waves, shakes the particles of their medium up and down and side-by-side. P waves can travel through solid granite, magma, water or even air, while S waves can only travel through solids, they are unable to travel through fluids. The P waves are the fastest of all known seismic waves, it is the first seismic wave to register on the seismograph, while the S wave is the second one.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.