This essay Global Warming has a total of 753 words and 4 pages.
Human kind has entered a brand new relationship with the earth. The constant and increasing
pressures we are exerting threaten our planets ability to sustain life itself. Change-in the way we think , and
in the way we live-is needed now.
Global warming is the most urgent environmental problem the world will face in the next decade
and the next century. Few, if any, trends are more important to our future than climate change caused by
human activities. Scientist around the world are warning us that global warming poses a major threat to our
future quality of life, previously there has been little information on this problem. Right now, the rate of
global warming may be 100 times faster than it has ever been. Very soon the earth may become hotter then
at any time in human history. In the last decades the problems of atmospheric change have been gravely
advanced by pollution resulting from human activities. These environmental changes pose a real threat to
the lives of people and wild life.
It is vital to all of us that we fully understand the complex relationship between the atmosphere
and the earth.
The earth is getting warmer. the changes are small, so far, but they are expected to grow and speed
up. Within the next 50 to 100 years, the earth will continue to heat up hotter than it has been in the past
as oceans warm and glaciers melt, land and cities along coasts may be flooded. Heat and drought
may cause forests to die and food crops to fail. Global warming will effect weather everywhere, plants and
animals everywhere and people everywhere.
Humans are warming the earth¹s atmosphere by burning fuels, cutting down forests, and by taking
part in other activities that release certain heat- trapping gasses into the air. Humans all over the world need
to get together and solve these problems.
In the southern hemisphere, the warming is the greatest over Australia, southern south Africa, the
southern tip of south America, and the area of Antarctica near Australia. In the northern hemisphere,
warming is strongest in Alaska, northwest and eastern Canada, most of the Soviet Union, and parts of
Southern Asia, North Africa and south west Europe. Climate has cooled in Great Britain and northern and
eastern Europe. In the USA scientists found no overall warming trend in weather records kept since the
nineteenth century, however keep in mind the United States covers only 1.5 percent of the earth¹s surface.
As warming continues, every place on the earth will be effected.
In the frozen heart of the last ice age, 18,000 years ago, the temperature was only about nine
degrees Fahrenheit colder then today. So a change of a few degrees can have a dramatic effects. Todays
most sophisticated climatic models estimate the global temperature will rise between 3 and 9 degrees
Fahrenheit in the next century.
This could occur as early as the year 2050. Here are the large scale changes the rise might bring: As water
warms it expands, taking up more space. So warmer ocean water, with added melt-water from glaciers, will
rise by twenty inches to five feet in the next 50 to 100 years.
Just a 1 foot rise in sea level can cause shorelines to recede a hundred feet, and in flat terrain, a
thousand feet. If ocean waters rise several feet, whole beaches could wash away. Many homes, hotels, other
buildings, and entire cities will be threatened. Salt water will pollute freshwater wells that millions of
people use for drinking water. Coastal marshes, which are vital nurseries for fish and other ocean life will
be endangered. Along undeveloped coast, marshes may survive because they can move inland with the
rising waters. In many places seawalls and other human structures will prevent this process and the marshes
will be destroyed.
In the United States ocean water may cover the Florida Keys and large parts of southern Florida
Two kinds of action are called for. One is to take steps to prepare for the the effects of warming
that already have begun. Agricultural scientist must develop varieties of wheat and other crops that can
grow in a longer but drier growing season.
Ways must be fond to use irrigation water more effectively. Conservation will also be important
for drinking water supplies.
Governments that control building and other development along coasts must begin to plan for
rising sea levels. In the United States, billions of dollars have been spent to replace send eroded from
beaches, and to
Topics Related to Global Warming
Climate change, Climate history, Effects of global warming, Global warming, Sea level, Attribution of recent climate change, Ice age, Sea level rise, Effects of global warming on oceans, Physical impacts of climate change
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