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If this process is to continue and accelerate, ways must be found to scoutmas is coming full printing christmas ugly sweater  reflect directly or indirectly the full environmental costs of fossil fuel in the market place.

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water quality continues to be a concern, particularly in developing countries, and water supply can be regionally or locally scarce. Just as environmental threats and challenges operate interactively, scoutmas is coming full printing christmas ugly sweater   they are caused by the activities of several sectors and have the potential to influence the transition toward sustainability in many sectors. In the following paragraphs, we discuss three integrative, interactive challenges. The changes underlying these challenges are cumulative and are likely to result in surprise. The nonsustainable use of living resources carries a number of critical consequences for humans and the other species of earth. Most obviously, overuse and misuse lead to a reduction or loss of resources and thus directly affect human well-being.

For example, a number of recent analyses have raised alarms over the nonsustainable management of ocean fisheries . Recent assessments54 suggest that half of the world’s fish stocks are now fully exploited, nearly a quarter are overexploited, and many fisheries have collapsed. Fisheries provide direct employment to about 200 million people, and account for 19 percent of the total human consumption of animal protein.55 Their degradation has grave implications for economic and food security. economies’ energy use to produce goods has been gradually improving , but energy-efficiency opportunities have only partly been exploited. There are also many new technologies (e.g., photovoltaics, electric cars) that may help provide the energy the world needs with far fewer adverse local, regional, and global environmental impacts. As environmental regulations, including emissions fees and emission trading regimes, come into play, market incentives will induce the adoption of cleaner technologies. This is already apparent in the switch of many electric power systems from coal to gas.