SCI 207 Dependence of Man on the Environment
Instructor: Rebecca Gillaspy
April 22, 2012
Global warming is it fact or fiction? Consequently it is important to be able to distinguish the true facts from fiction that is being promoted. Global warming is not a small problem nor is it a single country’s problem, but an entire society’s one; one that could have a huge impact on our environment and thus putting our world in jeopardy of not having a sustainable world. This may very well become the largest challenge humanity will face in the twenty-first century (A Cooler Climate, n.d.). So this paper will analyze the question is global warming ...view middle of the document...
The planet creates some of the global warming naturally; for that reason one cannot assume that all of the warming has been caused by human activities. According to information obtained from A Cooler Climate (n.d.), natural causes contribute to some of the causes of global warming. This first natural cause is the eruption of large volcanos that can potentially propel a lot of dust into the sky; this dust acts as a shield to solar radiation and causes a cooling trend in the atmosphere. Even though this natural cause happens, it does happen less frequently than others. Another significant cause to the climate changing is referred to as the wobbly Earth. This term means that as the Earth spins it is slightly wobbly; as a result it exposes the northern and southern latitudes at different times of the year. Due to these tilts of Earth, it will receive more or less solar radiation depending on the angles. This less than perfect rotation causes changes in the temperatures of the Earth’s atmosphere, which can be for millions of years. Another natural cause that effects the solar radiation levels of Earth are called sun spots. These sun spots cause increased solar activity, which cause short-term warming cycles on Earth (A Cooler Climate, n.d.). According to the U. S. Environmental Protection Agency (2011), it states that significant changes can be measured and contributed to global warming and can be monitored through the following ways: by tracking the Earth’s temperature, determining the precipitation amounts that fall around the world, measuring the wind gusts, and charting the changes in the ocean’s circulation. These natural processes can last for an extended period of time, such as decades or longer. For these very reasons, everyone on Earth needs to understand just exactly what the causes of global warming entails. The evidence indicates that natural causes from the Earth are contributing factors too. These facts are important for and needed so the public can become aware of this information. If people become more informed, then the understanding will follow. The impact of global warming not only comes from mother-nature as pointed out, but will be initiated from humans as well.
Currently humans are contributing to the greenhouse gases, causing more warming than what occurs naturally; this is called by scientists the enhanced greenhouse effect. According Turk and Bensel (2011), a report indicates that on average global concentrations of carbon dioxide, methane, and nitrous oxide, the three main gases, are rising due to an increase in human activities compared to pre-industrial times. The three main gases have been on the rise since the pre-industrial times, these times are usually considered between the agriculture society and the industrial revolution which occurred between the mid-18th and 19th centuries. Due to the rise of human activities in the using and burning of coal, oil, and natural gas, it has increased carbon dioxide by 40%, methane...