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Ocean and Earth's Systems

Name: _________________________________
Earth Science
Across
Ca
35 grams per liter for oceans
Early time in Earth's history when only phytoplankton and algae inhabited the seas
Ave pH of 8.1
Concentration of hydrogen ions in an aqueous solution
Interface where carbon dioxide is both absorbed and emitted
Avogadros number of particles
A pH of 7
A very powerful greenhouse gas
K
An intrusive igneous rock with visible crystals and no layering
Symbol Na
Down
Eon witnessing an explosion of life in the ocean
A pH less than 7
A conductor through which electricity enters or leaves an object
A widely burned fossil fuel
A pH greater than 7
Early ocean inhabitants. Needed to oxygen
Photosynthetic organism living in the ocean
Four footed animal found in ocean, many of which secrete a fragile shell
CO2
Mg
Symbol Cl
Small floating or weakly swimming organisms
Calcium carbonate in crystalline form
-log[E-7]
Contains water