Measuring in light-years also allows astronomers to determine how far back in time they are viewing , Because light takes time to travel to our eyes. Everything we view during the dark in night has already been happened.
The four factors which reflected population density is:
Natality rate
Mortality rate
immigration
emigration
Around the world, the cities with the dirtiest air and water are typically found in Low-income countries in Africa and Asia.
<h3>Why dirty environment?</h3>
Reason most low income countries espcially Africa and Asia are dirty is largely due to poverty. This is the bane of under deveolpment in these regions.
Most low income countries are poor hence lack basic social amenities to take care of their environment.
Hence, around the world, the cities with the dirtiest air and water are typically found in Low-income countries in Africa and Asia.
Learn more about environements here : brainly.com/question/18827802
Answer:
ISCO-DUG-WUAZ
Explanation:
Seismic waves of an earthquakes is recorded first in the station closest to the earthquake. The P wave is the faster moving wave and then the S wave. The faster the time it takes the P and S waves to register in the seismographer the closer the station to the site of the earthquake. Bearing this in mind, the wave was first registered in ISCO making it closest to the earthquake site, followed by DUG and then WAUZ.
ISCO (14sec)-DUG (57sec)-WUAZ (73sec)
