has increased between 0.6 and 1.1 degrees Fahrenheit,

glaciers over the world have decreased in size and

worldwide sea level has risen 10 to 20 centimeters.

(Global Warming Opposing Viewpoints) Are these changes

due to human behavior or natural causes? Is global

warming a threat to the world environment? Global

warming is a complex issue where scientists on both

sides of the subject have a valid point of view.

The green house effect is causing the earth to get

warmer. But why is the earth getting warmer, what is

causing global warming? What can we do to fight global

warming or why don't we need to worry about it? These

are some of the questions many people are asking.

The earths atmosphere acts like a green house keeping

the world at a very livable temperature, of about 60°F

but to many green house gasses such as carbon dioxide,

methane, and nitrous oxide are building up in the

atmosphere, holding to much of that extra heat and

causing global temperature to rise. The solar energy

passes through our clear atmosphere where most of the

energy is absorbed by the earth, keeping it warm but

the energy that the earth does not absorb is reflected

warming to reduce, stop, and learn more about the

are currently unable to determine which parts of the

supplies. It could also affect human health, animals,

he says this does not prove that methane is the cause

(www.epa.gov/globalwarming) Yet many scientists and

the Arctic, and Antarctica. The alpine and lowland

apparent in high-latitude regions such as the Arctic

(http://www.climatenetwork.org/uscanweb/mountn.pdf)

Here is a diagram of the greenhouse gas emissions per

Some common words found in the essay are:
Opposing Viewpoints, North American, Global Warming, Arctic Antarctica, Ice Sheet, University California, National Parks, , global warming, Climate Fear, carbon dioxide, green house, global temperature, James Kennett, greenhouse gas, carbon dioxide emissions, gasses person, methane released, cause global, methane cause global, temperature rise, global warming threat, methane cause, fight global warming, green house gasses,
Approximate Word count = 1370
Approximate Pages = 5 (250 words per page double spaced)