Answer:
Population pyramid is used to show the changes taking place in demography of country.
Explanation:
- The population pyramid shows the demographic structure of a community. Births, deaths, and migration are three important components of population change that alter the trends in the population composition of a place.
- The main economic reason why the people under the age group of 50 are less likely to migrate to the community is due to they have good earnings and better standards of living.
- One social factor that can attract the migrants that are over the age of 65 is social linkages and cultural ties. The population of females that is vier 80 years of age is more in numbers due to they have better health conditions.
- The population pyramid can be used to show social welfare as it harnesses human capital over time.
Answer:
The luminous envelope of a star from which its light and heat radiate.
Explanation:
in science it mean is:A sphere of light or radiance.
Early scientific attempts st determining Earth's age gave a number that was around 4.6 billion years old.
<h3>Radiometric dating methods</h3>
The age of rocks can be most determined by radiometric dating.
This process of radiometric dating makes use of two different isotopes of a sample.
It is known that Radioactive isotopes break down within a known amount of time and this enables geologists to determine the age of a sample with the aid of equipment like thermal ionization mass spectrometer.
Learn more about Radiometric dating at
Fraserburgh's is the biggest whitefish and shellfish port
