Which one of the following statements is not true? a. The molecules in a solid vibrate about a fixed position
b. The molecules in a liquid are arranged in a regular pattern
The molecules in a gas exert negligibly small forces on each other
d. The molecules of a gas occupy all the space available

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.

Is this correct if not can u correct me

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.