Joseph Proust first proposed which of the following? A Law of Conservation of Mass B Law of Multiple Proportions C Law of Definite Proportions D Avogadro's Hypothesis

What is a metal replacement reaction

Which type of fossil does this image depict?

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.