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Hace 4 días · This air purifier is a perfect choice for bedrooms, living rooms, kids’ rooms, kitchens, basements, and offices. The Alen FLEX is one of the quietest air purifiers we tested, producing only 53.7 dBA at max speed. In the 560 sq. ft. (52 m²) room test, it improved the air quality by an incredible 94%.
Hace 2 días · Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological agents that alters the natural features of the atmosphere.
Hace 5 días · Air pollution is the introduction of airborne chemicals, particulate matter or biological materials that cause harm or discomfort to organisms. The population growth , industrialization and motorization of human societies have significantly increased the amount of airborne pollutants in the Earth's atmosphere, causing noticeable problems such as smogs , acid rains and pollution-related diseases .
Hace 2 días · Atmospheric CO 2 concentration measured at Mauna Loa Observatory in Hawaii from 1958 to 2023 (also called the Keeling Curve).The rise in CO 2 over that time period is clearly visible. The concentration is expressed as μmole per mole, or ppm.. In Earth's atmosphere, carbon dioxide is a trace gas that plays an integral part in the greenhouse effect, carbon cycle, photosynthesis and oceanic ...
Hace 5 días · The more polluted air we breathe, _____ we get. A. the weakest. B. the more weak. C. the weaker. Đáp án chính xác. D. The most weak. Xem lời giải. Câu hỏi trong đề: Bộ 35 đề thi minh họa Tiếng Anh có đáp án chi tiết năm 2022 !!
Hace 5 días · Know what you breathe and the quality of air in your city and nearby locations. Real-time AQI, map, weather & fire data, health advice with insightful & analytical dashboards. Current Arunachal Pradesh Air Quality Index (AQI) is 42 GOOD level with real-time air pollution PM2.5 (24µg/m³), PM10 (40µg/m³), Temperature (23°C) in India.
