In Delhi, screens are put up across the city showing PM 2.5 levels as being dangerous. Particulate Matter (PM) are small dust and soot particles that come out from car exhausts. These particles are only 0.0025 millimeters thick which is thinner than the human hair!
Why do you think these particles are dangerous to our body?
In Delhi, screens are put up across the city showing PM 2.5 levels as being dangerous. Particulate Matter (PM) are small dust and soot particles that come out from car exhausts. These particles are only 0.0025 millimeters thick which is thinner than the human hair!
Why do you think these particles are dangerous to our body?
The correct option is B PM 2.5 particles are so small that they are not trapped in the nose and will enter the lungs.
PM 2.5 particles are extremely small particles. These particles are smaller than the hair present in our noses. Thus, these particles are not trapped in the nose and freely enter the lungs. Here, some of these particles block and kill the cells in the lungs which perform the gas exchange. Some are also absorbed into the blood stream and can cause cancer.
PM 2.5 particles are so small that they are not trapped in the nose and will enter the lungs.
PM 2.5 particles are extremely small particles. These particles are smaller than the hair present in our noses. Thus, these particles are not trapped in the nose and freely enter the lungs. Here, some of these particles block and kill the cells in the lungs which perform the gas exchange. Some are also absorbed into the blood stream and can cause cancer.
