Form words from the segments using sufixes -e, -able, -ing, -er, -ant, -tion, -al, -ful, -ed, -ous, -less to fill in the blanks
contamin(at)-, pollu(t)-, dispose-, discharg-, poison-, recycl-, harm
1) Paper is one of the most frequent waste materials, but it can be _______.
2) Nuclear waste can _______ the groundwater.
3) Pesticides are usually _______ substances. But organic fertilisers, e.g. manure, are _______.
4) Coniferous forests in the Northern Bohemia were _______ by acid rains.
5) Chemical factories _______ large amounts of waste water into rivers.
6) Paper, glass, plastics, and metals are _______ materials.
7) Acid rain is caused by _______ gases.
8) CO2 is a _______ which probably contributes to global warming.
9) Changes in the climate are due to _______ of the atmosphere.

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