If ionization energy increases in a period from left to right, why does oxygen have lower lonization energy than nitrogen?

In saturated organic compounds, all the bonds between carbon atoms are called?

Sugar is dissolved in water. which is the solute? sugar neither both water

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.