1) Which photos show pollution in water? a) oil spill b) overfishing c) rubbish 2) Which is biodegradable? a) plastic bag b) paper bag 3) Is a plastic pen biodegradable? a) Yes, it is. b) No, it isn't. 4) Is a paper plate biodegradable? a) Yes, it is. b) No, it isn't 5) Is a newspaper biodegradable? a) Yes, it is. b) No, it isn't. 6) Are these pots biodegradables? a) Yes, they are. b) No, they aren't 7) Are these glasses biodegradable? a) Yes, they are b) No, they aren't 8) About fumigation... a) Natural cause b) Human activities 9) Insect killer... a) Human activities b) Natural cause 10) Sand storms a) Natural cause b) Human activities 11) Emissions of factories a) Natural cause b) Human activities 12) Pollen a) Natural cause b) Human activities 13) What is one way to help with land pollution a) Recycle b) Burn garbage 14) Factory fumes belong to a) Air pollution b) Land pollution c) Water pollution 15) Vehicle fumes belong to a) Water pollution b) Air pollution c) Land pollution 16) Oil spill belong to a) Air pollution b) Water pollution c) Land pollution 17) Litter belong to a) Land pollution b) Air pollution c) Water pollution

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