Veganism does not make a big impact on the Earth, so it is reasonable to be an environmentalist without also being vegan.
Between 18% and 51% of all greenhouse gas emissions are directly attributable to livestock respiration, methane, production of animal products and other relatable sources, this compared to 13% from every form of transportation on the planet combined. Animal agribusiness also both uses and pollutes almost half of the Earth's available land and is responsible for over 90% of Amazon rainforest losses. Further, it is the greatest contributor to wildlife habitat destruction, and it is easily the leading cause of species extinction and ocean dead zones. Finally, while fracking consumes as much as 140 billion gallons of fresh water annually in the United States, the farming of animals uses at least 34 trillion gallons of fresh water annually.
The majority of the environmental problems we face today are being directly caused by animal agribusiness, and the most effective solution to these problems is the adoption of a vegan lifestyle and a plant-based diet. One year of veganism saves around 725,000 gallons of fresh water, which would take you 66 years to use in the shower. By choosing a vegan lifestyle and a plant-based diet, you automatically reduce your carbon dioxide output by 50% and use 91% less oil, 92% less water, and 89% less land. Each day, an individual vegan saves over a 1000 gallons of fresh water, 45 pounds of grain, 30 square feet of forests, 20 pounds of CO2, and the life of at least one animal. So if you want to do your part for the Earth, or if you self-identify as an environmentalist, the only reasonable and responsible course of action is to adopt a vegan lifestyle and a plant-based diet.
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