Warning: Use of undefined constant referer - assumed 'referer' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 102

Warning: Use of undefined constant host - assumed 'host' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 105

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 106

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 109
Global Warming - Essay

Global Warming


The relationship between humans and the state of the ecosystem is not only
dependent upon how many people there are, but also upon what they do. When there
were few people, the dominant factors controlling ecosystem state were the
natural ones that have operated for millions of years. The human population has
now grown so large that there are concerns that they have become a significant
element in ecosystem dynamics. One of these concerns is the relationship between
human activities and climate, particularly the recent observations and the
predictions of global warming, beginning with the alarm sounded by W. Broecker
(1975).

The relationships among humans, their activities and global ...

Want to read the rest of this paper?
Join Essayworld today to view this entire essay
and over 50,000 other term papers

with respect to each other is presented here to
demonstrate the relations among these factors.

POPULATION GROWTH

Many of us have seen linear graphs of human population showing the enormous
growth in the last two centuries. However, significant changes in population
dynamics are lost in the exponential growth and long time scales. If the data
are replotted on a log-population by log-time scale, significant population
dynamics emerge. First, it is apparent that population growth has occurred in
three surges and second, that the time between surges has dramatically shortened
(Deevey, 1960).

Figure 1. Population (Log-population verses log-time since 1 million
years ago). Time values on x-axis, ignoring minus sign, are powers of 10 years
before and after 1975 (at 0). Vertical dashed-line at 1995. Filled circles for
known values are to left of 1995 and open circles on and to right of 1995 are
for projected values. (Data updated from Deevey, 1960). ----------

Deevey's 1960 graph has ...

Get instant access to over 50,000 essays.
Write better papers. Get better grades.


Already a member? Login

second surge began with the agricultural revolution about 10,000 years ago
and was followed by slow growth. Deevey argued that moving down the food chain
was the underlying cause of this large and rapid spurt. The timing of the
present surge matches the rise of the industrial-medical revolution 200 years
ago.

A relation between innovation and population growth is embedded in the log-log
plot. There was rapid growth at the start of each surge. Then, growth rate
slowed as people adapted to the precipitating innovations. Each surge increased
the population more than 10-fold. It appears that we are nearing the end of the
present surge as recent growth rates have declined. After the ...

Succeed in your coursework without stepping into a library.
Get access to a growing library of notes, book reports,
and research papers in 2 minutes or less.


CITE THIS PAGE:

Global Warming. (2007, July 23). Retrieved November 28, 2024, from http://www.essayworld.com/essays/Global-Warming/68457
"Global Warming." Essayworld.com. Essayworld.com, 23 Jul. 2007. Web. 28 Nov. 2024. <http://www.essayworld.com/essays/Global-Warming/68457>
"Global Warming." Essayworld.com. July 23, 2007. Accessed November 28, 2024. http://www.essayworld.com/essays/Global-Warming/68457.
"Global Warming." Essayworld.com. July 23, 2007. Accessed November 28, 2024. http://www.essayworld.com/essays/Global-Warming/68457.
JOIN NOW
Join today and get instant access to this and 50,000+ other essays


PAPER DETAILS
Added: 7/23/2007 02:39:26 PM
Category: Science & Nature
Type: Premium Paper
Words: 2521
Pages: 10

Save | Report

SHARE THIS PAPER

SAVED ESSAYS
Save and find your favorite essays easier

SIMILAR ESSAYS
Global Warming
Global Warming
Global Warming
Global Warming
Global Warming
Global Warming A Hoax?
Global Warming In India
Global Warming ------
Impacts of Global Warming
Global Warming Extended Definit...
Copyright | Cancel | Contact Us

Copyright © 2024 Essayworld. All rights reserved