The development of the population policies in the 20th century were due too multiple factors, the most important of which were:
- Fertility rates were starting to lower down, especially in the ''western world'' in the second half of the 20th century.
- Increased demand for labor force.
- The World Wars, especially the second one caused huge migration movements.
- Millions of people from less developed countries were trying to migrate to more developed countries in search of a better life.
Answer:
What these stars most have in common is that they are in hydrostatic equilibrium during the main sequence.
Explanation:
These stars are quite diverse and cover a wide spectrum of size and brightness since they are the most numerous group of stars in the entire universe.
A main sequence star:
- has not yet consumed all the hydrogen in its core
- can be yellow, white or blue but not yet a dwarf star
We have that a mile is equal to 5280 feet. Hence the whole distance is 15.998.400 feet in distance. Since every 16 feet we have one stroke, we have to divide the distance by 16 to get the number of strokes. The result is 999.900 strokes. Hence, if one wants to be accurate, the correct title is "999.900 pedal strokes". For poeticness though, maybe the best title is "1 million pedal strokes".
What imaginary line cuts across the top of south america?
The Equator