BALANCE OF OXYGEN AND CARBON DIOXIDE IN THE AIR
• The balance of oxygen and carbon dioxide in the atmosphere is maintained through respiration in plants and animals and by photosynthesis in plants.
• Plants produce oxygen during photosynthesis and utilize oxygen during respiration.
• They produce much more oxygen during photosynthesis than they consume.
• This is how the oxygen consumed by plants and to a large extent by animals is replenished in the air through photosynthesis.
Read More...AIR POLLUTION
• Pollution is the addition of substances in the environment in quantities that are harmful to living beings.
• Air is getting polluted day by day because of various human activities.
• Burning of fuels such as coal and petroleum, excessive burning of fuels such as wood and coal, smoke and harmful gases released from industries, smoke released by vehicles, and machines releasing gases are the major causes of air pollution.
• These gases spread in the air and spoil the quality of air, thereby making it impure.
• Air pollution has major effects on plants, animals as well as human beings.
• Harmful gases present in polluted air make breathing difficult.
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