Four liquids are shown here. is the only compound illustrated.

a)
salt water

b)
orange juice

c)
skimmed milk
eliminate

d)
distilled water

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Which description best characterizes the motion of particles in a solid?

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.