. Cu - Cu2+ + 2e-
This equation represents
a redox reaction
an oxidation reaction
a hydrolysis reaction
a reduction reaction

Astream of surface water reaches a porous portion of sediment and seeps into the ground. this water eventually joins a large reservoir of water located beneath the earth's surface. the example above describes the interacting with the a. cryosphere; biosphere b. hydrosphere; biosphere c. hydrosphere; geosphere d. cryosphere; geosphere