The focus is the place inside Earth's crust where an earthquake originates. The point on the Earth's surface directly above the focus is the epicenter. When energy is released at the focus, seismic waves travel outward from that point in all directions.
M = - 3
16m - 12 - m + 5 = - 52
16m - m = - 52 + 12 - 5
15m = - 45
m = - 45/15
m = - 3 ✔️
The effects socially would be that the delivery will not be well respected and their will be conflict between the deliver and customer, business, etc . The effects economically would be that the business will start to decline in customers of interest in that area and potentially will make a bad name for that business in general, meaning less business and less money. This leads to a drop in business status worldwide. The effects environmentally are possibly limitless, it affects everything. By the service being poor many things and people could suffer, including greenery and yardwork or whatever. There will be an effect on environment but it depends on the service and how poor it is.
You should learn oceanology and also geography,biology.
