Saturday, May 26, 2007

Effects of global warming ...


Global warming will affect peoples and earth. The main affect of global warming is increasing in the global temperature. Also, there are many other effects of global warming such as acidification, ecosystems, spread of diseases and rising sea levels. I divided the effects into four groups as following:

Effects on weather-More extreme weather-Increased evaporation-Cost of more extreme weather-Destabilization of local climates2. Oceans-Sea level rise-Temperature rise-Acidification-Shutdown of thermohaline circulation-Ecosystems-Ecological productivity-Glacier Retreat3. Economic-Effects on agriculture-Insurance-Transport-Flood defense-Migration-Northwest Passage-Development-Environmental-Water scarcity-Mountains4. Health-Direct effects of temperature rise-Spread of disease-Impacts of glacier retreat

Now, I’m going to talk about one of the Effects on Health in general.

Extreme high temperatures increase the number of people who die on a given day for many reasons; people with heart problems are vulnerable because one's cardiovascular system must work harder to keep the body cool during hot weather, heat exhaustion, and some respiratory problems increase. Higher air temperatures also increase the concentration of ozone at ground level. It damages lung tissues and causes problems for people with asthmas other lung diseases. Rising temperatures have two opposing direct effects on mortality; higher temperatures in winter reduce deaths from cold, higher temperatures in summer increase heat-related deaths.