- Nutrition in Plants
- Nutrition in Animals
- Fibre to Fabric
- Heat
- Acids, Bases and Salts
- Physical and Chemical Changes
- Weather, Climate and Adaptations of Animals of Climate
- Winds, Storms and Cyclones
- Soil
- Respiration in Organisms
- Transportation in Animals and Plants
- Reproduction in Plants
- Motion and Time
- Electric Current and its Effects
- Light
- Water: A Precious Resource
- Forests: Our Lifeline
- Wastewater Story
NCERT Exemplar Solutions Class 7 Science Solutions for Wastewater Story - Exercise in Chapter 18 - Wastewater Story
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Fill in the blanks in the following statements using words given in the box.
A very _________ number of our people defecate in the open. It may cause _________ pollution and soil
pollution. Both the surface water and _________ water get polluted. _________ water is the source for
wells, tubewells and _________. Thus it becomes the most common route for _________ borne diseases like
_, dysentery, etc
A very large number of our people defecate in the open. It may cause water pollution and soil pollution. Both the surface water and groundwater get polluted. Groundwater is the source for wells, tube-wells and handpumps. Thus it becomes the most common route for water-borne diseases like cholera, dysentery, etc.
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