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"Grass seed can grow just about anywhere, just as long as they have plenty of water and nutrients. Can grass grow on lava rocks as well as it can on soil, though? Find out the answer to this question in this article from HowStuffWorks."^^<http://www.w3.org/2001/XMLSchema#string>
<http://science.howstuffworks.com/life/botany/question34.htm>