Fact 1

Fact from movie: The most vulnerable part of Earth is its atmosphere.



Source 1:
http://www.ucar.edu/communications/ucar40/atmosphere.html



1. The source is UCAR (University Corporation for Atmospheric Research)

2. Credentials: They are a University and is connected with NCAR (National Center for Atmospheric Research). The ending to their URL is .edu.

3. The source is very credible.

4. The source says that the level of carbon dioxide is increasing which is weakening the atmosphere, thus trapping more heat inside the atmosphere, causing global warming. It also says that with the progress of technology, we will be able to modify the weather, thus fixing the atmosphere.

5 & 6. I believe the source because they seem to be very credible and their website looks very professionally done.


Source 2: http://www.spacedaily.com/reports/Changes_In_Solar_Brightness_Too_Weak_To_Explain_Global_Warming_999.html

1. The source is Peter Foukal and Tom Wigley.

2. Credentials: relations with NCAR; NCAR has relations with the National Science Foundation

3. The source is very credible. It is a science based website.

4. The source says that "Many recent studies have attributed the bulk of 20th-century global warming to an increase in greenhouse gas concentrations in the atmosphere."

5 & 6. I believe the source because it shows specific evidence to prove its statement. It shows many specific years.


Source 3:
http://www.moorlandschool.co.uk/earth/atmosphere.htm

1. The source is Moorland School.

2. Credentials: It is a school in England.

3. The source is fairly credible because I don't know what kind of school it is.

4. The source says that levels greenhouse gases have gone up with the beginning of industrialization. It also says that greenhouse gases damage the ozone layer and thinning out this layer that absorbs harmful UV rays from the sun.

5 & 6. I believe this source because it is very formal and because it is a school that published this website.


I believe this fact because the levels of carbon dioxide and other greenhouse gases have been increasing in massive amounts within the past century. More greenhouse gases=more damaged ozone layer (which is a part of the atmosphere).