Describe one example of how the environment affected human immigration or human population change

the environment affected human immigration in different pollution Like air pollution, water pollution, land pollution, noise pollution.

Explanation:

Air pollutions

Air is a life-sustaining source which is composed of various gaseous particles.

when foreign substances like oxide of carbon, sulphur, nitrogen, smoke, dost ,etc.get mixed with natural concentration, it becomes polluted. source of pollutants can be industries, factories, girls or developmental activities like road for house construction. air pollution is the introduction into the atmosphere of chemicals, particulates or biological materials that cause discomfort, disease,or death to humans, damage other living organisms such as food crops,or damag the natural environment or built environment.a substance in the year that can be adverse to human and the environment is known as an air pollutant.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.