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FamesNef

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The life cycle analysis of domestic livestock farms has been saying for years that the environmental impact of cattle, new balancen 550 sheep, converse plateau pigs and poultry is very high. Millions of hectares of productive land are used to raise them and grow feed, converse chucks beige and the farms themselves emit a high quantity of greenhouse gases, sneaker herrn such as methane and carbon dioxide, which contribute to warming the our planet. Bulky cows. But which pets have the greatest impact? According to a study just published in the scientific journal Proceedings of the National Academy of Sciences, the main culprits are cows. Which require and emit respectively 28, 11, 5 and 6 times more land, water, greenhouse gases and nitrogen compounds than other farms. The analysisi, conducted by US and Israeli researchers, took into account not only the needs and emissions of the various types of livestock, but also the calorie or protein content of the animals themselves, in order to arrive at the value of, for example, the necessary agricultural land per kilocalorie ingested of poultry. The calculation, as the authors point out, is rather complex and many data are not easily available. A high impact. But the analysis led to the determination, for example, that the portion of the Americans' diet based on animals occupies approximately 3.7 million km2 for fodder cultivation and grazing land, equivalent to approximately 40% of the entire territory of the United States. nation, or 12,000 m2 per person. The water needed is 45 billion m3 and the fertilizers used are half of the total. ...
 
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