where do oceans derive their water and salts from? The textbook answer would say
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/tell-me-where
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/minerals
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oceans-and-seas
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmental-science