Untreated human excreta is a health hazard. Explain.

Fill in the following blank with suitable words: Untreated human excreta is a …………………….hazard.

Fill in the following blank with suitable words: Untreated human excreta may cause …………pollution and …….pollution.

Untreated domestic sewage has a low

Radiation is a health hazard because it occurs

Which of these is a pollution related occupational health hazard?

Human Health and Disease

State whether the following statement is true or false: Human excreta can be used in biogas plants.

Assertion (A) : Inhabitants close to very busy airports are likely to experience health hazards. Reason (R) : Sound level of jet aeroplanes usually exceeds 160 dB.