The Founders is a collective term used to refer to the people, all white men, who were important in the creation of the United States. This meant they were seeking independence from Great Britain at the same time many of the Founders held people in bondage. This reflects a

Based on its chemical properties, identify the position of each chemical family on the periodic table.

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.

Why is the bottom layer of a trophic pyrimid the