มีการจราจรที่แออัดระบบนิเวศต่างๆโดนทำลายโดยโรงงานที่ปล่อยก๊าซของเสียต่างๆมากขึ้น ดังนั้นการมีประชากรเพิ่มขึ้นหรือลดลงก็ส่งHuman resources, that environmental changes on this earth. We find that in each region of the world, the changes of the environment are caused by many factors and is a major cause of human action. More population more consumption More population can increase number of gap between rich and poor people of the country, when gap increase it effect to many factors of a country such as economic and social development; government can not provide equality of social welfare to all area of country.In the same way, If population decrease it will be effect to number of labour, country will be lack of labour it some part like agriculture or industry.There is traffic congestion, various ecosystems damaged by factory waste gas emissions. Thus, the population is increasing or decreasing it's impact on both the good and the waste simultaneously.