Which photos show pollution in water?, oil spill, overfishing, rubbish, Which is biodegradable?, plastic bag, paper bag, Is a plastic pen biodegradable?, Yes, it is., No, it isn't., Is a paper plate biodegradable?, Yes, it is., No, it isn't, Is a newspaper biodegradable?, Yes, it is., No, it isn't., Are these pots biodegradables?, Yes, they are., No, they aren't, Are these glasses biodegradable?, Yes, they are, No, they aren't, About fumigation..., Natural cause, Human activities, Insect killer..., Human activities, Natural cause, Sand storms, Natural cause, Human activities, Emissions of factories, Natural cause, Human activities, Pollen, Natural cause, Human activities, What is one way to help with land pollution, Recycle, Burn garbage, Factory fumes belong to, Air pollution, Land pollution, Water pollution, Vehicle fumes belong to, Water pollution, Air pollution, Land pollution, Oil spill belong to, Air pollution, Water pollution, Land pollution, Litter belong to, Land pollution, Air pollution, Water pollution.

Pollution

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