Essay On Human Population

World Population Essay

1222 Words5 Pages

According to the Population Division of the United Nations, world population reached 6,500 million in 2005 and will continue growing by more than 76 million per year, United Nations estimates indicate that by 2050 there will be between 7,700 million and 10,600 million, being the most likely projection of 9,100 million inhabitants. The availability of arable land and increased efficiency in food production from land can reach their limits. The oceanographic conditions, climate and its effect on soil quality and various human uses to determine crop land will be unable to provide food for the ever growing human population. On the other hand, it is recognized, therefore, that marine and freshwater aquatic, covering over 70% of the planet's…show more content…

In 2000, the salmon produced more than 1.1 million tons or 61% of the total production of salmon in the world. This trend is particularly evident in Norway, where the combination of reduced availability of wild resources and sustained increases of crops has resulted in the production of farmed Atlantic salmon is 100 times higher than the wild catch. In Canada, the decline of natural stocks of Atlantic salmon and Pacific has led to severe restrictions on the catch of wild species. In Chile, growing sustainably salmonid species has increased, reaching in 2000 27% of world production exceeding (52%) the value of exports of fishmeal and other marine products.

In Chile within the various aquatic species on which extractive activities are carried out and cropping, the mussels are second in the national harvest totals (18%), this group being represented by the species' giant mussel "(Choromytilus chorus), the "mussel" (Mytilus chilensis) and "mussel" (Aulacomya atra) (Subpesca, 2006) (Fig.1). The development of the mussel, which represents the oldest farming activity has been developed in Chile, since there are reports of field trials from 1968 (Yanez, 1974), was initiated breakdown product of the fisheries of these resources, as the near extinction of "choro shoe" and the depletion of the natural banks of the "mussel" and "mussel." The greatest success is achieved in the cultivation of "mussel" in Putemún and other

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The Problems with Human Population Essay

2941 Words12 Pages

The Problems with Human Population

In Chapter III of The Origin of Species, Darwin writes: "Even slow-breeding man has doubled in twenty-five years, and at this rate, in a few thousand years, there would literally not be standing room for his progeny.” (Darwin 29) Three hundred years ago, the population was only at about 500 million, and during this time the population was at a slow increase. Another factor during this period of time was the birth and death rates were at much higher levels. Many babies were born, but many also died. “Living conditions were such that many of the remaining children failed to survive beyond the age of thirty.” (Black 84) The crisis of Over Population should not be a surprise to anyone, currently if you…show more content…

For decades, humans have fooled themselves into believing that we would never deplete all of earth’s resources, but because we could not control the population this has become almost inevitable. Not only is the exhaustion of resources a problem we face, but the destruction of these resources is as well. This destruction includes continued urban growth, degradation of land and water resources, massive deforestation, and buildup of greenhouse gases. Pollutants such as chlorofluorocarbons (CFCs), radiation, and pesticides are all physical environmental factors found in air, land, or water that are damaging the planet. They recognize no political boundaries. Not only are resources affected but nature and many of its elements are in danger. Populations are being wiped out, species, and communities of plants, animals, and microorganisms that are working parts of our life-support systems are being destroyed. These are all partly responsible for the delivery of ecosystem services, which are the most irreversible of all losses. Just one element of biodiversity, species diversity, is disappearing at a rate estimated to be 1000 to 10,000 times the "background" rate, which is the more or less constant extinction rate that biologists presume to occur naturally over

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