Answer:
Urbanization: this is the process by which the population or urban areas increases, usually because people move out to the cities form rural areas.
Metropolitan area: an admnistrative divison consisting in a city, and its sorrounding areas.
Suburb: the area sorrounding a city that has a lower population density than the urban core, but a higher population density than a rural area.
The relationship between these three variables is very close. Urbanization is what drives the growth of both urban cores and suburbs, and a metropolitan area emerges when a city and its suburbs grow enough that they require a new special administrative division in order to coordinate local policies.
A. True, stronger wind can move alot, including cars....
The correct answer would be spring tide.
I hope this helps.
Answer:
b. flat rotation curves in spiral galaxies
Explanation:
Dark matter accounts for majority of the matter in the universe (about 85%). It is considered to be composed of subatomic particles which are yet to be discovered. Dark matter cannot be observed because it does not emit light that can be detected. Only its gravitational effect is visible.
Astronomers when calculated the mass of the visible matter and tried to account for the observed speed of stars in the galaxy, there was a mismatch. To understand what caused this mismatch, astronomers gave name to the invisible matter as the Dark Matter.
The expected velocity of stars should decrease away from the near the center of the galaxy but a constant velocity of stars was observed that is a relatively flat rotation curve was obtained.
Thus, flat rotation curves in spiral galaxies in an evidence of Dark Matter.
