Read remarks by different speakers, and then answer the question. sylvia: we found that poisonous chemicals had been thrown into the river. tomas: we have to protect everyone from illnesses caused by environmental problems. marcos: we can collect glass and plastic from homes which can then be re-used. gerard: we are heading for a major disaster in terms of the population of the oceans. ulla: we must stop using this chemical. it can destroy plant and animal life. 1. who mentions public health? 2. who is complaining about people dumping toxic waste? 3. who is talking about avoiding the use of something which is harmful to the environment? 4. who is explaining about recycling household waste? 5. who is sounding a warning about an environmental catastrophe?

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