The main reason for the wall's construction had always been defense. Since China's first dynasty, the empire faced a near-constant threat of attack from the nomadic tribes to the north. This included those famed Mongols as well as lesser-known groups like the Xiongnu and the Göktürks.
Climate change s the process of changes in the level of global sea level and climatic weather patterns around the world that affects the entire ecosystem and carrying capacity of the earth hence, the climate has become such a great phenomenon and the need to address this is quite large.
climate change includes the depletion of ozone that is natural gas that encircles and protects the earth from the harmful effects of the sun and solar activity. We, humans, have destroyed the sustainable fashion of the planet to protect itself at the time of any violent catastrophes.
The grave threat of climate is being realized currently due to the face the climate now is getting out of the hands of the people and this is evident in form of flooding that occurs every tear massive depletion of natural resources and emissions of greenhouse gases.
And the continuous release of harmful gases on earth and the depletion of resources that are needed for the future of the planet is causing many humans to think of living on the moon and other earth-like planets.
the continental divide is a ridge of high ground that runs irregularly north to south through the rockey mountain and separate eastward flowing from westward flowing streams
