1) What are the main causes of water pollution?  a) Fish and turtles in water. b) plastic, garbage and industrial waste 2) What can happen to fish when there is not enough oxygen in the water? a) they can't float b) they can't breathe c) they can't see 3) We can prevent water pollution by - a) reduce the use of plastic. b) proper disposal of chemicals. c) proper disposal of garbage. d) all of the above 4) Which of the following is not a natural cause of water pollution? a) animal waste b) oil spill 5) Tick the harmful effects of water pollution - a) death of animals b) diseases in humans c) habitats of aquatic animals are destroyed d) all of the above

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