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	Podcast:		BrainStuff
	Episode:		What's the White Stuff in Soil Mixes?
	Category:		Science & Medicine
	Duration:		00:05:59
	Publish Date:		2020-11-30 10:00:00
	Description:		Potting soil often contains perlite, which is a type of volcanic rock that helps keep soil light and airy. Learn how it works in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.
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