Answer
Verified
452.7k+ views
Hint: Some people are allergic to pollen and dust. The small particles in the atmosphere can enter our respiratory system, our body acts as a barrier to the larger particles, and does not let them enter our nasals. Breathing is affected if we live in a polluted area.
Complete answer: The harmful substances or gases in the air cause pollution. The presence of toxic gases pollutes the environment. The gases from various sources like vehicles, factories get mixed in the atmosphere and pollute them.
What is particulate matter? The sooty, dust or pollens, spores, hairs etc are the suspended particulate matter in the atmosphere called particulate matter. Their size makes them a threat to us. Smaller the size, larger the harm to us.
So the Central Pollution Control Board in India was set up to look after the pollution rate in the atmosphere. They deduced that the particulate matter less than 2.5 micrometres can enter our respiratory system and cause pulmonary diseases. They can be deeply inhaled in the lungs and can prove to be fatal.
So the answer is option C: 2.5 or less.
Note: India has the most number of polluted cities. 99% of our pollution breathes the polluted air as said by the WHO. The main reasons for the pollution are construction sites, power plants, vehicle emissions etc. The gases also contribute to global warming making the Earth’s temperature go high. This reduces the life expectancy of the existing human life. Pollution impacts child growth, birth weight etc. Smog is another concept leading to harmful impacts on our lives in winters.
Complete answer: The harmful substances or gases in the air cause pollution. The presence of toxic gases pollutes the environment. The gases from various sources like vehicles, factories get mixed in the atmosphere and pollute them.
What is particulate matter? The sooty, dust or pollens, spores, hairs etc are the suspended particulate matter in the atmosphere called particulate matter. Their size makes them a threat to us. Smaller the size, larger the harm to us.
So the Central Pollution Control Board in India was set up to look after the pollution rate in the atmosphere. They deduced that the particulate matter less than 2.5 micrometres can enter our respiratory system and cause pulmonary diseases. They can be deeply inhaled in the lungs and can prove to be fatal.
So the answer is option C: 2.5 or less.
Note: India has the most number of polluted cities. 99% of our pollution breathes the polluted air as said by the WHO. The main reasons for the pollution are construction sites, power plants, vehicle emissions etc. The gases also contribute to global warming making the Earth’s temperature go high. This reduces the life expectancy of the existing human life. Pollution impacts child growth, birth weight etc. Smog is another concept leading to harmful impacts on our lives in winters.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Which are the Top 10 Largest Countries of the World?
Give 10 examples for herbs , shrubs , climbers , creepers
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Change the following sentences into negative and interrogative class 10 english CBSE
How do you graph the function fx 4x class 9 maths CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE