Other Effects of Global Warming
There are positive and negative economic impacts concerning global
warming. It has been predicted that some areas of the world such as northern
Canada, Central Africa, and Central Asia could see an increase in their
growing seasons because of either warmer temperatures or more precipitation.
This would produce larger crop yields for these nations. It has also been
speculated that increased CO2 levels may allow plants to grow
more rapidly. The negative side of this scenario is that other nations
will be dealing with severe drought conditions or be inundated with water
due to the rising sea levels. The Alliance of Small Island States has joined
together in concern for the future of their islands such as the Maldives,
which already under sea level would be completely washed out by flooding
if current trends continue.
In addition to the possible effects of global warming on biodiversity,
plant growth, agricultural production, economic disruptions, and disease
spread, there are other areas that science teaching and indeed other subject
area teachers may want to have students investigate.
These areas could include:
-
energy use as the need for more air contitioning increases in some areas
while winter heating could decrease
-
the need to provide for human migration from coastal and island areas as
ocean levels rise
-
the changing rainfall and snowfall patterns effects on watershed and aquifer
levels
-
ocean current shifts that could impact upon climates like Ireland and England
-
changes in fish migration affecting world fisheries
-
increased pressure to dam wild rivers as sources of non-carbon dioxide
releasing energy sources
-
even changing vacation habits as ski areas become more remote while shore
lines become closer.
Sources:
Global Warming Unchecked: Signs To Watch For, Harold W.
Bernard, 1993, Indiana University Press.
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