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TAP WATER : (CONTENT (Drinking/tap water; characteristics, Urban water…

- - - - Drinking water characteristics :
        
        smell, taste, odourless, colourless, transparent, harmful, pesticides, heavy metals, pathogens, microbes, dissolved oxygen, contaminants, suspended solids, mineral salts, to meet quality standards
      - Urban Water Cycle
        
        supply safe water, freshwater resources, water supply, groundwater, wells, water treatment, suitable, raw water, screening, settling, filtering, disinfection, customers, system of pipes, storage reservoirs, infrastructure, available, purpose, residents, sewers, wastewater, discharge.
    - - Question Form in Present Simple
        
        Wh- Questions where the subject is not 3rd person singular
        What
        What kind of …
        When
        Where + do + subject all persons exept 3rd person sg + verb ……….?
        How
        Why
        How much
        What do you think/ know about…….?
        What is your opinion about ?
        Why do you think …?
        
        Wh- Questions where the subject is 3rd person sigular
        What
        What kind of …
        When
        Where + does + subject 3rd person singular + verb ……….?
        How
        Why
        How much
        Questions with the verb TO BE
        Is + subject 3rd person singular ?
        Is there ………?
        Are people ………………………………?
        Are there …………?
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