Does the darkling beetle have an internal skeleton or an exoskeleton

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:

its first and third is your answer i did the qustion the fourth isnt right

elements make up everything, and they combine to make compounds.

the answer is c