Study

concept 4.2 lesson 4 reducing water pollution

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  • Engineers used the glue-like substance to build .................... homes instead of .......... bricks
    sustainable - traditional
  • Give reasons: Soil scientists and engineers hope to stop using traditional bricks and concrete in building houses.
    because they need large amount of energy and produce a lot amount of pollution
  • What happens to ...? The sea water if industrial water is thrown into the sea without treatment.
    the sea water will be polluted
  • The part of the soil which is used to make glue-like substance that bind the materials together is .................... which is found beneath .....................
    subsoil - topsoil
  • The glue-like substance which is used to bind building materials together is formed by ............................ change of the ...........................
    chemical - soil
  • To produce traditional bricks and cement, a lot of ........................ is required and a lot of ....................... is produced
    energy - pollution