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[Sub-Zoology]
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1st answer.
Common symptoms include:
- cough.
- rusty or green phlegm, or sputum, coughed up from lungs.
- fever.
- fast breathing and shortness of breath.
- shaking chills.
- chest pain that usually worsens when taking a deep breath, known as pleuritic pain.
- fast heartbeat.
- fatigue and weakness.
infection of pneumonia?
The viruses and bacteria that are commonly found in a child's nose or throat, can infect the lungs if they are inhaled. They may also spread via air-borne droplets from a cough or sneeze. In addition, pneumonia may spread through blood, especially during and shortly after birth.
pneumonia causes and treatment?
Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, and difficulty breathing. A variety of organisms, including bacteria, viruses and fungi, can cause pneumonia.
2nd answer.
The different categories of diseases based on the extent of occurrence are: Epidemic diseases – diseases breaks out and spreads from place to place affecting a huge group of people at the same time. Endemic diseases – this disease is found in a particular area only attacking less number of people.
3rd answer.
Controlling measure of noise pollutions are: Planting more number of trees around public places will help in sound absorption and reduce the deleterious effects. People working in industries or noisy areas need to wear ear plugs, ear muffs or noise helmets to protect from occupational noise hazardous.
4th answer.
Biomagnification is defined as the accumulation of a particular substance in the body of the organisms at different trophic levels of a food chain. One example of biomagnification is the accumulation of insecticide DDT which gets accumulated in zooplanktons. Small fishes consume these zooplanktons.
5th answer.
- The largest source of SO2 in the atmosphere is the burning of fossil fuels by power plants and other industrial facilities.
- The main sources of SO2 emissions are from fossil fuel combustion at power plants, refineries, and other industrial facilities. Secondary sources of SO2 emissions include ore smelters and the burning of high sulfur fuel by trains, large ships, and non-road equipment.
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