It is believed the major reason for the decline in amphibian species is . a.
death through disease
b.
changing reproductive habits
c.
mutation
d.
climate change

It is believed the major reason for the decline in amphibian species is death through disease.

Explanation:

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: