If you were designing a cord for television using two materials with different levels of electrical conductivity, for safety you would place the substance with conductivity the cord.

lower ; outside.

Explanation:

Conductivity of a given material is the measure of electrical current that can pass through the material.

A good conductor has high conductivity while a bad conductor has lower conductivity.

Insulators have zero conductivity.

While preparing the cord the material with lower conductivity should be used to construct outer layer of the chord so that accidental electrical shock and short circuit could be avoided .

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.