Some bags are biodegradable, which means they can break down and become a part of the soil., We shouldn't cut down too many trees because they help keep the air clean., Some plants can be toxic to pets., We can recycle plastic bottles by putting them in the recycling bin., Put your garbage in the trash can., Conservation is about saving water and electricity to help the planet., Scientists must dispose of chemical waste to protect the environment., The decision to build a new park became a hot potato as everyone had different opinions., It's not good to use up all your candies in one day., Pollution in the ocean is just the tip of the iceberg.,

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