The cycles within which earth's matter moves are closed systems. This means nothing is gained or lost from the system; it only changes from one form to the other. The total amount of matter on earth remains the same. Using tectonic plates as an example, divergent boundaries occur where new oceanic crust is being created. New crust is being created and simultaneously the same amount of crust is being destroyed at convergent margins.
The human settlements hierarchy is as follows:
- An ecumenopolis is a theoretical construction in which the entire area of Earth that is taken by human settlements, or at least, that those are linked so that to create an urban areas so big that they can shape an urban continuum through thousands of kilometers.
- A megalopolis is a group of conurbations, consisting of more than ten million people each.
- A conurbation is a group of large cities and their suburbs, consisting of three to ten million people.
- A metropolis is a large city with it's suburbs, consisting of multiple cities and towns.
- A large city is a city with a large population and many services.
- A city has many services, but not as many as the large city.
- A large town is a town with population of 20,000 to 100,000 people.
- A town has a population of 1,000 to 20,000 people.
- A village is a human settlement or community that is larger than a hamlet but smaller than a town.
- A hamlet has a very small population, very few services, and only few buildings.
- An isolated dwelling has only 1-2 buildings.
Angles in a triangle add up to 180 degrees.
180 - 125 = 55
Add the ratios 4+7 = 11
Divide the left over angels by the ratio: 55/11 = 5
Now multiply 5 by each side of the ratio:
4:7
4*5 = 20
7*5 = 35
So the 2 angles are 20 and 35 degrees.
To check, you can add up all the angels : 20 + 35 + 125 = 180
So we know 20 and 35 is correct because it adds up to 180 degrees :)
Answer:
Africa to Middle east to Asia and to Oceania and then to Eurasia and to America.
Explanation:
- The human migration started around 2 million years ago form the continent of Africa, the early humans crossed the land bridges that were covered by water.
- The population of the early homo sapiens migrated to Europe between the 130,000 and 115,000 million years ago. Reaching china through the nile valley and heading to the middle east into modern Israel by the Strait on the Red Sea at the time sea level was much lower and narrow.
- <u>The migration continued through Asia to the southeastern coast and entering the Australia 50,000 years ago. At the time of the last glacial maximum. Also, the coastal population around the southeast Asia grew with the dispersal of the humans giving rise to the old and the new world i.e America.
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- Paleo Indians emerged for central Asia crossing the Beringia land bridge between the eastern Siberia and present-day Alaska. Continued by the end of the last glacial peroid i.e 23,000 years BP.
Answer: Soviet Union is da best
Explanation:
