Pollution.
butts
traffic pollution
population growth
75
Three environmental challenges to the Sumerians were:Unpredictable floodingNo natural barriers for protectionThe natural resources were limited for the Sumerians.
cfujy
water pollution
In 2010, Pakistan was ranked as the 125th cleanest country in 2010 by the UN's EPI. In 2012, Pakistan climbed to 120.
Environmental Science focuses on scientific knowledge, chemistry, mathematics, biology, and physics to provide an advance scientific knowledge of contemporary environmental challenges. Environmental studies focuses on integrated understandings to the political, historical, social , and scientific facets out environmental challenges.
Pollution Growth.
population growth
Introduction to benefits and challenges of urbanization