The barrier that holds back water from a river is a dam
As far as a threat, North Korea has been seen as such for many years (since WWII), when North Korea sided with Russia. America and its Capitalism were not fond of the Communist party, and so we have really been fighting/being concerned about Russian influence.
Historically North and South Korea have been in conflict many years before America and Russia got involved. When we did though it got worse.
Trump has done very little to resolve this, some would say he is making it worse.
AND as for any current events ask Google!
Answer:
Most stars in our part of the Galaxy are formed in open clusters of a few dozen alone.
Explanation:
Stars are those objects in the galaxy which are formed up of plasma consisting of gases mostly hydrogen and helium. They are luminous balls that can been seen easily if we look over the sky in the night. The nearest star to our planet is Sun. Fusion reaction take place in sun that emit out a lot of energy and convert the hydrogen in helium.
Interesting Information:
It has been observed that the stars that are in a cluster have the similar composition and age. They are also present at the same distance.
Answer:
Urbanization:
The urbanization is the process of of increase in the population in the nearby cities or areas. The urbanization word comes from the Latin word urbs and the meaning of this word is city. The urbanization basically increase the proportion of the people population in the country.
There are various types of factors which influence the migration from rural area to the urban area are:
- Increase the non agriculture workers
- Migrate in search of occupation
- Age
- Family income
- Cultivated land areas
- Industrialization