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Answer:
1st answer.
Classification of disease on the basis of occurrence.
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.
2nd answer.
Some of the ways to control noise pollution are as follows: (1) Control at Receiver's End (2) Suppression of Noise at Source (3) Acoustic Zoning (4) Sound Insulation at Construction Stages (5) Planting of Trees (6) Legislative Measures.
3rd 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.
Explanation:
#Hope you have satisfied with this answer.
1.
Endemic - describes a disease that is present permanently in a region or population
Epidemic - is an outbreak that affects many people at one time and can spread through one or several communities
Pandemic - is the term used to describe an epidemic when the spread is global.
sporadic - Diseases that are seen only occasionally, and usually without geographic concentration, are called sporadic diseases.
2.
- Use earplug while listening to the song .
- plant tree and save tree as much as possible.
- Not to blow horn while driving vehicle.