Answer:
Reducing Air Pollution
Explanation:
Pollution in China is very serious, before this pandemic, lots of citizens wore masks because of the pollution
Answer:
HIV is a virus that attack the cell which helps to fight against infection and make person suffer from others infections and diseases.
Aquired immunodeficiency syndrome is the Aids caused by HIV virus that is chronic.
If the natural quality of water is destroyed by mixing unwanted and harmful substances in water, it is called water pollution.
