Which part of the nervous system is a gray, wrinkly organ made up of millions of neurons? a. nerves b. brain c. spinal cord d. eye
wasn't exactly sure what category to put in

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

In which reaction is precipitation occurring?