<P> In the past 30 years (1978 - 2007) in the United States the number of women farm operators has tripled . Today, women operate 14 percent of farms, compared to five percent in 1978 . Much of the growth is due to women farming outside the "male dominated field of conventional agriculture". In community supported agriculture women represent 40 percent of farm operators, and 21 percent of organic farmers . With the change of laws in land ownership over the past century, women are now allowed all the same freedom of land ownership that men have . </P> <P> Sustainable agriculture has become a topic of interest in the international policy arena, especially with regards to its potential to reduce the risks associated with a changing climate and growing human population . </P> <P> The Commission on Sustainable Agriculture and Climate Change, as part of its recommendations for policy makers on achieving food security in the face of climate change, urged that sustainable agriculture must be integrated into national and international policy . The Commission stressed that increasing weather variability and climate shocks will negatively affect agricultural yields, necessitating early action to drive change in agricultural production systems towards increasing resilience . It also called for dramatically increased investments in sustainable agriculture in the next decade, including in national research and development budgets, land rehabilitation, economic incentives, and infrastructure improvement . </P> <P> Most agricultural professionals agree that there is a "moral obligation to pursue (the) goal (of) sustainability ." The major debate comes from what system will provide a path to that goal . Because if an unsustainable method is used on a large scale it will have a massive negative effect on the environment and human population . The best way to create policy for agriculture is to be free of any bias . A good review would be done with "practical wisdom," a virtue identified by Aristotle, distinguishing practical wisdom from scientific knowledge, this coming from Nichomachean Ethics . The science of agriculture is called "agronomy", the root of this word relating to scientific law . Although agriculture may not fit well under scientific law, and may not be designed to be treated as an Aristotelian scientific knowledge, but more practical wisdom . Practical wisdom requires recognition of past failures in agriculture to better attain a more sustainable agricultural system . </P>

Which of the particles in using natural resources are sustainable . which are not sustainable