Canada and Mexico . are the two countries
The concept of Peak Oil was first developed in the 1950's by the geologist M. King Hubert.
Answer:
The illegal migration has created socio-political and economic problems and lead to the growth of population in the southern states.
Explanation:
- Most of the migrants include individuals from north Africa and sub-Saharan regions that have migrated to the southern states of Europe like Spain and Italy. Many have come from Morocco, Algeria Tunisia, and other places.
- They have affected the population diversity of the country and permanently settled in France, Netherlands, Spain, Germany, and Belgium. Since 2000 illegal migrations have resulted in rising of conflict and poverty.
- Some positive effects of migration include the education and job aspects while the negative impacts can be seen as the growth of slums and asylums and child laborers. Their impact on resource usage and economic development has changed in many European cities.
To find the epicenter (the point on the earth's surface where an earthquake begins) during earthquakes, one need to view the seismogram (a record of the ground motion), and at least two other seismographs recorded for the same earthquake. Other instruments such as a map, a compass for sketching circles on the map, a ruler, and a pencil will also be used.
The following are the steps of the triangulation process in the correct order to find the epicenter during earthquakes:
Step 1: Subtract the time of P wave arrival from S wave arrival.
Step 2: See what the time difference is equal to in distance on a seismic wave chart.
Step 3: Draw circles representing the distances from at least three seismograph stations to the epicenter on a map.
Step 4: Find the point where all 3 circles intersect, and you've found the earthquake's epicenter.
