Effects Of Global Warming
A region’s climate may alter over time becoming hotter, cooler, drier or wetter. Natural selection will determine the organisms with characteristics appropriate to the new climate. Over hundreds and thousands of generations constant minute changes will eventually lead to a new species that can survive and thrive in the altered climate.
For a long time it has been believed that the effects of global warming on agriculture and food supply is going to be a positive one. This is because the rising level of carbon-dioxide resulted for global warming will help the greeneries for photosynthesis.
Thus there will be a rise of agricultural production and food supply. The theorem received a boost after the evidence of a sharp rise of barley production as one of the effects of global warming in Iceland which was quite impossible even few years ago.
The success or failure of an organism is reliant upon its ability to reproduce young that mature to produce more young. Only the young with the greatest survival traits for any given habitat will endure. These surviving young will transfer their adaptive characteristics to the subsequent generations. This process is known as natural selection.
But more recent experiments and researches have revealed that the effects of global warming on agriculture and food supply are not that good after all. AN UNEP 2001 report on the global warming has predicted that USA is going to have more droughts, floods, landslides and storms.
Winter will gradually be shortened and sobered down, while summer will rise in expansion and severity. Along with this heavy rain, big storm, heavy snowfall, high sea level, increasing coastal erosion and other problems will occur.
In warm climates organisms need to cool off. Animals’ strategies include heat avoidance (by going underground, or into water), or sweating and panting to induce evaporative temperature reduction. Plants must adapt to heat and drought by using leaves to minimise heat stress and water loss.
So to fight the effects of global warming, the researchers have established new methods of production with continuous revision of models. But still the best possible process to reduce the effects of global warming on agriculture and food supply is to be established.
