Climate change can be defined as changes in weather patterns over time. This time can span up to millions of years (Gillard, 12). These changes are caused by biotic processes and solar radiation variation which the earth receives. Other causes of climatic change are volcanic eruptions and plate tectonics. Human activities can also cause climatic change. Nevertheless, in modern times, climate change has come to be known as ‘Global Warming’.
The first website, http://www.ucsusa.org/global_warming/, talks about levels of sea rises. It also goes to explain large wild fires as causes and consequences of global warming. This website gives the health hazards which are caused by the global warming menace. The developers of this climatic change website have the aim of showing how global warming affects each individual as well as the environment. The harmful effects such a drought and health issues are discussed. The global warming experts such as Rachel Cleetus and Doug Boucher have studied weather pattern on Earth and give their expert opinion in this site.
The second website, http://www.friendsofscience.org/, provides insight into the vice of climate change. It uses pictorials and graphs to show how global warming affects the environment. For example, there is a picture that has been well drawn to show how carbon dioxide affects rivers. When this happens, the river is dried up by the sun. The artist gives a clear detail how the sun dries the river and how the environment (represented by trees), is affected. The website also shows a graph which gives global temperature rises over a period of time. There is another graph that also shows Canadian climatic change, which it shows that, has the worst global warming crisis in the world. In addition to the above, the website gives facts and figures of the whole world concerning global warming.
The third website, http://www.skepticalscience.com/climate-change, gives what climatic changes mean in global warming. It gives the melting off of melting of ice and the effects in the global warming phenomenon. It gives medieval period of warming and explains the effects in the more icy climates. It also gives the effects of global warming to the animals in these areas. For example, it shows how penguins have continually died due to global warming and how they have found it difficult to adopt in the global warming climates.
The evidence given in response to the changes in the global climate is drying rivers, drying trees and animal deaths as given above. Penguins have tried to adopt in the changing warm weather even though their habitat requires ice. Droughts, famines and other environmental issues have arisen because of global warming. Sicknesses such as some skin disease have been caused by global warming. Lung infections, sight problems and heart disease have also been given as evidences of global warming.
The website that is more credible is http://www.friendsofscience.org/. This is because it provides a lot of information and facts with reference to global warming. It also gives scientific references and consensus and even skeptics with reference to climatic changes. In addition, it uses pictorial evidence to show the effects of climatic change. The website that is least credible is http://www.skepticalscience.com/climate. This is because even the search engine could nit recognize it at first. It has less information and lacks sufficient evidence to its claims.
Works Cited
Gillard, Arthur. Climate Change. Detroit: Greenhaven Press, 2011. Print.
