Well...it depends when on the situation you are in.
If you are not sure, my best advice is to listen to what earthquake experts say:-)
Loss of lives can be prevented with evacuation plans. This would allow the people to be able to react when an earthquake strikes. Also, with the use of technology, sensors can be used to tell when an earthquake will happen, giving the people enough time to react. To minimize the number of infrastructures destroyed, strengthening of pillars and reinforcing of walls can be used, although it will not be as effective as building quake resistant infrastructures. The government can also analyse the risk of earthquake and move the population away from those high risk zones.
I have survived the 1999 Turkish earthquake killing approximately 50,000. As far as I know, there is no way to reduce an earthquake but if you meant "reduce the damage an earthquake causes" then there are ways for that. You must know if you are located on or around a fault-line where two tectonic plates meet. These plates move the opposite directions and cause an elastic tension effect, when they come to a point where the tension is so high they snap and cause shaking which is the quake. When developing a city or a community, on or around a fault line make sure the building is good and safe with the standards for earthquake, make everyone aware that a possibility of an earthquake is there and make emergency plans. I never saw the Turkish earthquake coming, it hit everyone by surprise so buildings changed, people became more aware of earthquake safety after the quake but we could have avoided the 50,000 dead.
They should have safety kits: fire extinguisher to keep fire out first aid kit
The Tutti Earthquake
No, a tsunami MAY occur after an earthquake, if the epicenter of the quake was underwater. Tsunamis do not always follow an underwater earthquake, though. That adds to people's uncertainty after a quake, especially about whether they should flee to higher ground after a quake.
it all dipends how bad it is
People avoid or limit an earthquake's damage by building structures that will not fail in the earthquake or subsequent events and make it safe at the same time.
They are building more buildings for people to live in!
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Because the person does not know if the house is sturdy to stay standing and it may colapse on top of the person or people.
It usually depends on the population of people living near the coast since tsunamis occur in near the coastal area. Similarly, it depends on the area the earthquake strikes at.
It helps people get warned of an earthquake so that they can go and find shelter before it strikes.
Because it is safer
The collapsing of the building on people, and people that contrat illness / dissease such as cholera.
Warnings on TVs tell people to get out of the building their in.
People living in earthquake regions should prepare with emergency kits because an earthquake may happen at anytime.
Loss of lives can be prevented with evacuation plans. This would allow the people to be able to react when an earthquake strikes. Also, with the use of technology, sensors can be used to tell when an earthquake will happen, giving the people enough time to react. To minimize the number of infrastructures destroyed, strengthening of pillars and reinforcing of walls can be used, although it will not be as effective as building quake resistant infrastructures. The government can also analyse the risk of earthquake and move the population away from those high risk zones.