<span>Thermochromic ink is a kind of material that takes advantage of thermochromism. In chemistry, this is where a substance changes hues when exposed varying kinds of temperature. In the fashion industry, these inks are used for creating different kinds of accessories, clothing and bag designs. </span>
Answer is c...............
Water. All organisms that depend on oxygen need water to live.
It's because they add to its hardness . Calcium is naturally dissolved in water
