Mass extinctions occur for many reasons. Changes in the environment might make it impossible for the local life to survive, diesease or drought might strike, or there might be a natural disaster. These extinctions make good divisions in geologic time because they are easy to locate over a wide area and mark a definitive change in the Earth's systems.
Monumental Axis is the central avenue in Brasilia's city design
Explanation:
The first section of the monumental avenue is known to be the "Ministries Esplanade" because it is enveloped by ministers building. Many important government buildings and monuments are established on the monumental axis.
Cathedral of Brasilia is present there in the monumental axis. It was constructed after 1950 as a plan to construct a modern city. It serves ti be the major transportation point. monumental axis have twelve lanes which marks to be the world' busy dual carriage way.
Black south Africans who left the reserves lived on plantation