Found at the lowest point of a large drainage area, these seasonal, marsh-like ponds collect and store water from rain and runoff. Unlike vernal pools, playas generally fill when temperatures are unsuitable for plant growth, and often the water is salty, alkali or both.
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Foreign trade and foreign investment, therefore, has played a central role in moving China toward a market economy. Strong vested interests now know how to take advantage of foreign marketing opportunities and have a stake in removing the barriers to trade that still exist.
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