| http://www.w3.org/ns/prov#value | - Practice your classroom lists.A Way To Help Planet Eart List ContentA Way To Help Planet Eart trouble -- danger;problem remains -- stays when other things have left hardest -- needing or using a lot of work conservation -- the protection and wise use of forests, rivers, minerals, and other natural resources extinct -- when a thing dies out and no more of its kind is left on Earth .
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