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Environmental Science

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AP Environmental Science
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Review Question Answers for 2:Envirnomental History: An Overview

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Review Questions for 2: Environmental History: An Overview What were the key factors in the near extinction of the American bison from the Great Plains of the United States? Settlers moving west after the civil war, railroads spreading west in the 1860s, commercial hunters hunting bison for their hides and tongues, farmers, ranchers, and the US army killing bison. Who are the hunter-gatherers, and what were their major environmental impacts?

High and Low Pressure Systems Comparison

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High Pressure System
Low Pressure System

In a high pressure system, an air mass (parcel of air with similar temperature and humidity) cools over an ocean or a cold region inland. This causes the particles in the air mass to lose kinetic energy, and become denser. When the air becomes denser, it contracts and draws in the surrounding air (from the upper troposphere). The atmospheric pressure is then increased by this added weight of the extra air. Because air moves from an area of high pressure to low pressure, this dense air moves outward. Earth?s rotation causes the wind to move clockwise around this high pressure centre. Because of this, the high pressure air sinks and becomes warmer and drier. This means that high pressure systems bring about clear skies.

The Environmental Transformation of Chattanooga, Tennessee

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Confederate States of America
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U.S. Route 11
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Name: Tony Ly Case Study Title: The Environmental Transformation of Chattanooga, Tennessee Chapter/Page #: 21 Describe: The problem of Chattanooga is that it is very polluted, even being rated to have the dirtiest air in the United States at one time. In clear day light, drivers had to turn on their headlights to see because of all the air pollution caused by everyday use from big production factories. Another waste product from the large industrial factories was fluid waste, which was dumped into Tennessee River, having the potential to be very harmful to that ecosystem. Some factories were even closed down and abandoned because of so much pollution that existed there. Explain:

Varicella Zoster

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Varicella Zoster

Varicella Zoster (aka) Shingles Shingles Lysogenic Enters the organism- After someone has chicken pox the virus can remain dormant in certain nerve cells in the body. Blisters form along the affected area (normally a narrow strip of skin starting near the spine and spreading to the stomach) the blisters break, forming small ulcers that begin to dry and form crusts. The crusts fall off in 2 to 3 weeks. Scarring is rare. The rash may involve face, eyes, mouth, and ears. Herpes Zoster has no specific location or ethnicity it affects, but the incidence rate for it is every year it ranges from 1.2 to 3.4 cases per 1,000 healthy individuals, increasing to 3.9?11.8 per year per 1,000 individuals among those older than 65 years.

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