The law that states when different compounds are formed by a combination of the same elements, different masses of one element combine with the same fixed to other elment

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

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.

The most common form of matter in the universe