Crossword Puzzle CitiesOnline version Read the clues and solve the crossword. by Diana Marcela Fúneme Estupiñán 1 The process of removing solid, liquid and angerous waste. 2 A plan that observes and controls operations. 3 Advanced and modern devices used for different purposes. 4 The general disturbance in sonar transmissions which is due to vehicles coming and going in the street. 5 contamination of air by smoke and harmful gases. 6 chemicals used to kill small insects or other organisms which are harmful for crops. 7 A large town that has risen awareness about the care of the environment. 2 3 7 5 1 6 4
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