Actually, that is debatable...different climate didn't change races, no matter how long white men being in Africa, won't change them to African i mean not the nationality, but the feature...it is because of DNA. We human have different traits that makes us all into different races in features...it is said that the only same thing tht link us all is the color of our nails....it is not weather or climate that chage our physical, it is determined by traits.
Of course people can intermarried or inter ****** or inter raping with each other and create new races, the trait will pass on, if it is not disturbed in a long time, it become permanent and new race is emerged. If it is disturbed, it will either goes back to their ancestral features or becoming something else...
The rest is cultural and language, furthermore religion...but the nature of most religion is spreading between races, so religion is no more a factor of determine races. Culture and language is still.
Example Arab and Jews, both are from the same ancestor, but these two are different races altogether. They don't share same language, culture, religion, and features. It is because of they themselves evolve in different culture altogether after being separated. So an Arab is an Arab, a Jew is a Jew. Within the race there's the ehnic...in Arab there are Beduin, Quraishin, Kalb and many more...they generally share the same culture, language and features only little difference from each other
Why Arabs don't turn black? They live in hot and sunny climate for thousands of years. The condition is similar with Africa. Still Arab is Arab and African is African. It is because of the DNA trait. Only this will change races feature, not climate or anything else.
Malay people was Indo-Aryan and the lost tribe of Israel...these mixed up and become the Mala people. "Mala" means egg...what egg? Dragon Egg....from this egg a dragon will come out and roam the earth, clean it up from all evil and injustice.....and start the age of dragon.....Dragon Age......or Skyrim "the dragons are returning..."...
Himalaya is where we come from...from Mala becomes Melayu...English call us Malaya or Malays
DNA can be changed by enviroment we live in trough generations DNA isnt stable it can be changed by many factors
Sometimes this change is fast sometimes it takes over thousands of years and is clasified as evolution not as minor changes
Arabians arent black becouse they dont need to if they would be black theyre bodies would overheat soon brown pigment in our body isnt only about heat and lenght of day
Africa is directly in tropical belt and that means they get more UV light than in subtropical belt (arabia,north africa,south asia)
So africans need to be black so UV wont cause them skin cancer same effect as with sun bathing, body is trying to reduce UV that it isnt ready for becouse it was accustomed for lack of UV over generations and fastest thing it can do for its protection is to get brown pigment under the skin
But arabians need to be more pale becouse they still need to absorb light to produce vitamin D when sun is above Southern hemispehere and there is not so mutch light
And people that live near poles need to be white for the same reason(winter nights are longer)
Jews are no longer genetically similiar with arabians becouse they lived in europe and had children with europe women over centuries and when they came back to Israel most of them were white not pale brown only religion was still the same