Which of these has the least impact on air pollution?
Which of these has the least impact on air pollution?
The correct option is B Carbon dioxide
Air is said to be polluted when there is any change in the normal amount of any of the components of air or when foreign substances mix with air. There are many types of pollutants like carbon monoxide, carbon dioxide, sulphur dioxide, etc. Carbon monoxide combines with hemoglobin in the human body to form carboxyhemoglobin which reduces the oxygen absorption capacity of blood. Sulphur dioxide and nitrogen dioxide cause acid rain. Carbon dioxide causes global warming. But carbon dioxide is useful to plants and animals as it plays important role in photosynthesis. Therefore, carbon dioxide is not a major air pollutant. It causes global warming only if is present in large excess.
Carbon dioxide
Air is said to be polluted when there is any change in the normal amount of any of the components of air or when foreign substances mix with air. There are many types of pollutants like carbon monoxide, carbon dioxide, sulphur dioxide, etc. Carbon monoxide combines with hemoglobin in the human body to form carboxyhemoglobin which reduces the oxygen absorption capacity of blood. Sulphur dioxide and nitrogen dioxide cause acid rain. Carbon dioxide causes global warming. But carbon dioxide is useful to plants and animals as it plays important role in photosynthesis. Therefore, carbon dioxide is not a major air pollutant. It causes global warming only if is present in large excess.
