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cultural runoff; limited natural fresh water resources; most of the population does not have access to potable water; deforestation; soil erosion; desertification Palau inadequate facilities for disposal of solid waste; threats to the marine ecosystem from sand and coral dredging, illegal fishing practices, and overfishing Panama water pollution from agricultural runoff threatens fishery resources; deforestation of tropical rain forest; land degradation and soil erosion threatens siltation of Panama Canal; air pollution in urban areas; mining threatens natural resources Papua New Guinea rain forest subject to deforestation as a result of growing commercial demand for tropical timber; pollution from mining projects; severe drought Paracel Islands NA Paraguay deforestation; water pollution; inadequate means for waste disposal pose health risks for many urban residents; loss of wetlands Peru deforestation (some the result of illegal logging); overgrazing of the slopes of the costa and sierra leading to soil erosion; desertification; air pollution in Lima; pollution of rivers and coastal waters from municipal and mining wastes Philippines uncontrolled deforestation especially in watershed areas; soil erosion; air and water pollution in major urban centers; coral reef degradation; increasing pollution of coastal mangrove swamps that are important fish breeding grounds Pitcairn Islands deforestation (only a small portion of the original forest remains because of burning and clearing for settlement) Poland situation has improved since 1989 due to decline in heavy industry and increased environmental concern by post-Communist governments; air pollution nonetheless remains serious because of sulfur dioxide emissions from coal-fired power plants, and the resulting acid rain has caused forest damage; water pollution from industrial and municipal sources is also a problem, as is disposal of hazardous wastes; pollution levels should continue to decrease as industrial establishments bring their facilities up to EU code, but at substantial cost to business and the government Portugal soil erosion; air pollution caused by industrial and vehicle emissions; water pollution, especially in coastal areas Puerto Rico erosion; occasional drought causing water shortages Qatar limited natural fresh water resources are increasing d
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