Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger.
The correct answer is - aging population.
The aging population phenomena is becoming a big concern in the past few decades in some parts of the world. The most affected by this trend are the European countries, as well as Japan, the United States, Canada, Australia.
As the countries get more developed, and people earn more, it seems that they have much less children, usually one or two, and many people don't even have a child, and considering the upwards trajectory of the life expectancy, it results in an ever growing old population, and smaller and smaller young population.
This is a very dangerous trend on the long term as a nation may simply die out over time, as well as creating big economic issues.
Answer: Verdadeiro
Explanation:
Jean-Jacques Dessalines foi um líder da Revolução Haitiana.
Answer and Explanation:
As we realize that for density calculation we need to manage numerous elements like volume of solid,mass of strong ,pore space (if present) , measure of pore space loaded up with water so there is numerous odds to get a mistake in density estimation , likewise moisture can also influence its worth.
So as to get the most fitting worth or to limit mistakes we need to take different preliminaries to discover thickness esteem.
Answer:
1) The Haywired scenario—headed by Tom Brocher and others—is a preparatory measure meant to ready law enforcement, fire fighters, utility workers, etc. for damage to infrastructure that will happen during a great Hayward earthquake. The right option is True.
2) The Haywired scenario plans for a similar amount of shaking compared to the 1868 Hayward earthquake. The correct option is True.
3) The amount of damage due to the 1868 Hayward earthquake is equal to our expected consequences following the upcoming next Hayward fault earthquake. The right answer is False.
Explanation:
1) The Haywired scenario is a 3D virtual sequence in which a hypothetical earthquake of magnitude 7 in the San Francisco Bay can cause chaos. An interdisciplinary panel of scientists have designed a hypothetical mainshock in the HayWard Fault and its possible impact and consequences of the ground shaking beneath Oakland. The idea behind this scenario is to improve the quality and reactiveness of Internet and telecommunication to react to such a hazard. They are seeking to prevent gaps in knowledge and communication needs and solve any "communication congestion" so that law enforcement, fire fighter, utility workers and any other service to work effectively under such a disaster.
2) The Hayward scenario is based on a large earthquake that hit the San Francisco Bay in 1868. Its magnitude was 6.8 and there is a high probability of such a massive quake occurring again. Scientists are also concerned with “recurrence interval” on the fault as this type of events tend to be equally or exceed the previous one in a cyclical flow of time.
3) The main difference between the earthquake that stroke in 1868 and the currently expected is that at that time damage was contrived to a small number of buildings as the land was just developing with scarce population. Conversely, an earthquake of that magnitude would threaten more than 7 million people leaving near the Hayward Fault. Apart from causing a vast destruction of infrastructure and building, it would seriously hit the national economy.