Calculate the pOH for a solutions with a pH of 12.34. Is the solution acidic or basic?

Why are people not able to scuba dive in the deep part of the ocean

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

What characteristics does a earthquake have