Biology 2483A Lecture Notes - Survivorship Curve, Ecological Footprint, Poa Annua
23 Nov 2012
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Document Summary
Human population growth a case study: humans have a large impact on the global environment. Our population has grown explosively, along with our use of energy and resources. Human population reached 6. 8 billion in 2010, more than double the number of people in 1960. Our use of energy and resources has grown even more rapidly. From 1860 to 1991, human population quadrupled in size, and energy consumption increased 93-fold. For thousands of years our population grew relatively slowly, reaching 1 billion for the first time in 1825. Now we are adding 1 billion people every 13 years. The human population increased relatively slowly until 1825 when the industrial revolution occurred then the population increased a lot. The growth rate has slowed recently to about 1. 18% per year, and continues to slow. By 2080, it is predicted there will be roughly. Many people have tried to estimate human carrying capacity.
