Which two substances are among the four major types of organic compounds made by living things?
O A. Potassium
B. Carbohydrates
O C. Proteins
Qu
O D. Water
2

B.Carbohydrates and D. water

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

let that person have a turn to speak : )