... are more independent than those in other countries.58. A computer can gather a wide range of information for many purposes.59. I have no idea of doing scientific research.60. Studying abroad ... exposure, may develop cancers or get children with birth defects. The major water pollutants are chemical, biological, or physical materials that degrade, water quality.Oil and chemicals derived ... airtight, with energy-efficiency inside. Their airtight construction keep airborne pollutants trapped inside, nature's air cleansing agents outside. Is it any wonder that statistics for asthma...