[" Sewage from our homes as well as from hospitals "],[" are likely to contain many undesirable pathogenic "],[" microorganisms,and its disposal into a water body "],[" without proper treatment may cause outbreak of "],[" serious diseases,such as "]

Disposal of sewage into water without proper treatment may cause outbreak of serious diseases. Give reason.

Disposal of sewage into water without proper treatment may cause out break of serious discases. Given reason.

Given below is a crossword puzzle. Read the clues across and clues down, and fill up the blank squares. Clues down 1. Germs or germ - substances introduced into the body to prevent occurrence of an infectious disease. 2. A disease caused by an infected dog that affects the central nervous system. 3. A disease in which the eyes, the skin and the urine turn yellow. 4. The disease pertussis is popularly known as whooping ....... Clues across 1. Category of pathogen that causes diseases like common cold and mumps. 5. This is the vaccine for preventing tuberculosis. 6. An organ usually affected by tuberculosis. 7. Jumbled spelling of one of the most common insect which visits our exposed foods and contaminates them. 8. Cover this part of your body by a handkerchief while sneezing to prevent droplet infection to others. 9. These may readily grow in your hair, if you do not wash it regularly. 10. A disease that weakens body's defence system against infections.

Read the following passage and answer the questions given. The production and improper disposal of waste are causes for a great deal of environmental pollution. Many toxic industrial wastes from manufacturing process require treatment and /or safe disposal. When materials are recycled, apart from saving on the coast of raw material, waste disposal coast are reduced. Some combustible materials like dried leaves etc can be burnt to get heat energy. Sewage treatment includes filtering, scudge settlement, degradation coagulation disinfection using chlorine etc. Certain microorganisms can degrade waste in the absence of oxygen-digestion. Sewage water is purified by: light, Fishes, Microorganisms, Aquatic plants

Read the following passage and answer the questions given. The production and improper disposal of waste are causes for a great deal of environmental pollution. Many toxic industrial wastes from manufacturing process require treatment and /or safe disposal. When materials are recycled, apart from saving on the coast of raw material, waste disposal coast are reduced. Some combustible materials like dried leaves etc can be burnt to get heat energy. Sewage treatment includes filtering, scudge settlement, degradation coagulation disinfection using chlorine etc. Certain microorganisms can degrade waste in the absence of oxygen-digestion. Which of the following statements about sewage treatment is false?

Read the following passage and answer the questions given. The production and improper disposal of waste are causes for a great deal of environmental pollution. Many toxic industrial wastes from manufacturing process require treatment and /or safe disposal. When materials are recycled, apart from saving on the coast of raw material, waste disposal coast are reduced. Some combustible materials like dried leaves etc can be burnt to get heat energy. Sewage treatment includes filtering, scudge settlement, degradation coagulation disinfection using chlorine etc. Certain microorganisms can degrade waste in the absence of oxygen-digestion. Proper management of disposal of household and industrial waste can be done by I. Recycling II. Incineration III. Sewage treatment IV. Digestion : I and II only; I and III only; I,II and III; All the above

Consider the following statements about water pollutants. (I) Disease causing pollutants are called pathogens (II) They are bacteria and other organisms that enter water from domestic sewage and animal excreta. (III) Gastrointestinal diseases are caused by Streptococcus faecalis and Escherichia coli bacteria present in human excreta. Correct option(s) is // are.