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Envs 1127

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ENVS 1127 Chapters 6, 8, 9 & 10 Homework Assignment 4
Due Noon Tuesday, October 15, 2013

1. Name and describe the four different revolutions leading to significant increases in the human population. What is the importance of the fifth revolution, the environmental revolution, to the size of the human population on this planet? (Chapter 8)
The Neolithic Revolution was the first revolutions that lead to a increase in human populations. The Neolithic Revolution occurred approximately 12,000 years ago and was the rise of stable food, the rise of settlements, specialization of labor, and the reduction of mortality. Following this is the Industrial Revolution saw the birth and rise of modern technology and science. Because of new energy sources, production became more efficient and faster. Food could be produced quicker; this also began increased environmental resource exploitation. The Medical Revolution included the increase of epidemics and other rise in diseases that gave children a high mortality rate. This resulted in a low population growth. Because of this, more health regulations were put into place. This in turn, increased human population growth rate. The Green Revolution began with the concern of over-production of food, this lead to an increase in agricultural efficiency.
The newest revolution, the Environmental Revolution, consists of policy and industrial changes. This also includes efficient technologies, urban, regional planning and also changes in personal decisions.

2. What is the IPAT formula and what is its purpose? (Chapter 8)
The IPAT formula is a formula used to account for human factors contributing to environmental deterioration and resource depletion. The IPAT formula goes as followed:
I(environmental impact)=P(population)*A(affluence and consumption)*T(technology of the society)

3. Identify and explain the demographic

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