The weather is very important on planet earth and it makes huge affects on our lives. Naturally when human plasma was created by God it was spreaded into varius parts of the earth by the environmental impacts we were created according to weather conditions. If we analys various parts of the world every continent has diffrent types of species and human racis. In african continent peoples was born or created by its atmosphare and that was impacted to their color. Mostly africans are black because of african hot weather but if we see another side of european continent there are white peoples because of cold atmosphare.
Asians are according to its fair weather and fair color peoples another words brown peoples. Species are also in diffrent colors like european crow has white color and asian crow has a black color.
Australian continent has a diffrent and redish peoples because of its weather condition. Original australians are red type humans but on another side of americans humans originally are black but nearly brown.
The life was started together in all continents. There are many myths about life that was told through religious peoples. Only one source was told about life begining and that was the religion. Where the human plasma came from and how its work that is another story.
In reality why the weather is changed? There are many reasons that causes change the weather like tree cutting mountain sliding, earthquake, human inventions, wind blowing etc.