Earthquakes produce P and S waves. The P waves are fast and of a higher frequency than S waves. P waves reach a point first and can pass through liquid media while S waves reach after and the lose much of their energy while passing liquid media. This is because S-waves are shear waves and require rigid/inelastic media for transmission.
During an earthquake, there is usually a shadow zone (where there is no destruction because S-waves did not reach) formed right above the epicenter of the earthquake. This is due to the fact that the S-waves were unable to transit through the liquid inner core of the earth before reaching the earth's surface. Only P-waves are registered in this shadow zone.
Answer: command democracy
Explanation:
Eliminating child labor is problematic (in third world countries) because of outsourcing. We have our products made in foreign countries with no child labor laws because it's cheaper. We eliminate child labor, the price of production goes up and bushiness have to charge more to cover the costs, hiking the prices to consumers in our economy. Therefore, big companies don't really want child labor to be eliminated. A lot more could be done about it, but many people choose not to help for their own personal gain.
The most populous country is China and its population is 1,379,302,771.