Question

what is air pollution? how it is caused? give any two harmful effects?​

Answer 1

Answer:

Explanation:

air polllution is the presence of substances in the atmosphere which are harmful to human beings and living things .It is majorly caused by fumes from car engines and contaminated air coming from factories.two of the many harmful effects are it can cause lung infections or diseases  and also the use of aerosal sprays that are not ozone friendly willl cause a tear in the ozone layer whigh means it will no longer protect us from the harmful UV rays which may even cause skin cancer.

Answer 2

━☞WATER POLLUTION:-

• The Addition of harmful substances into water bodies like lakes, rivers, oceans and etc. Is known as Water Pollution.

• It causes damage to aquatic life, polluted water may contain many harmful microorganisms.

• Drinking polluted water may cause diseases like dysentery, diarrhoea and typoid.

━☞Water is polluted by:-

• Washing clothes and utensils in water bodies.

• Realising chemicals from factories to water bodies without treating.

• Many industries discharge harmful chemicals into water bodies, causing water pollution. Examples are oil refineries,paper factories, textile and sugar mills.

• Fertilisers and Chemicals from agricultural fields carried by rain water into water bodies.

• The garbage thrown by people into water bodies.

• Bathing of domestic animals in water bodies.

• Social and Religious Practices

━☞Keeping Water bodies Clean:-

• We must not wash clothes or bathe animals in water bodies.

• We must not throw garbage into water bodies.

• Waste water from factories and sewage from homes, schools must be treated to make them lees harmful before letting them flow into water bodies.

• Water treatment plant should be installed in all industrial areas.

━☞What is potable water:-

• Water which is suitable for drinking is called potable water.

━☞How can we drink safe water:-

• Many households use boiling as a method for obtaining safe drinking water.

• Boiling water before drinking, boiling kills germs present in the water.

• Chlorinantion is a commonly used chemical method for purifying water. It is done by adding chlorine tablets or bleaching powder to the water. We must not use more chlorine tablets than specified.

Did You Know:- While brushing your teeth leaving the tap running may waste several litters of water. A tap that drips once every seconds wastes a few thousand litres of water every year. Think about it!