"Movement is the fundamental attribute of things", a philosophical assertion, is appropriate to describe climate change. Historically, due to changes in land and sea, solar activity, volcanic eruptions and other factors, climate change is the norm. The most famous is the Permian, which wiped out more than 90% species and six phyla disappeared from the earth (dinosaur extinction only wiped out a subclass at the top of the food chain). Even without this ancient history, the Quaternary Pleistocene had an ice age, which lasted about 1 00000 years and didn't end until100000 years ago. This is also an important objective reason for human beings to get rid of migration and start to settle down and engage in agricultural production. Even after entering civilization, the climate has changed. Take the history of China as an example. There was a warm period in the Tang and Song Dynasties and a Little Ice Age in the Ming and Qing Dynasties. Although the influence of climate on historical evolution needs further study by scholars, it has had an impact on the rise and fall of the country and the migration of ethnic groups, which is an acknowledged fact.

But it should also be noted that even without human beings, the climate will change for a long time. However, with the development of productive forces, human activities have begun to affect the overall environment of the earth (at least to some extent). Although no one dares to say what the final impact will be. However, there is no way for history to try and make mistakes. If the damage caused by human beings to the environment exceeds the carrying capacity of the ecosystem, then we cannot recover.

Before mankind came to this world, did more advanced and developed scientific civilization come to the earth?

There is no evidence to prove this statement. Although it cannot be completely denied, it can be said that the possibility of existence is slim.