More cards in this set

Card 6

Front

sewage treatment, cooling agent, chemical processing, hydro- electricity

Back

Preview of the front of card 6

Card 7

Front

boating, water sports, surfing, bathing, swimming and fishing

Back

Preview of the front of card 7

Card 8

Front

irrigation, crop washing and solvent for pesticides adn fertilisers

Back

Preview of the front of card 8