Because the melting of ice is 0 degree in which it get converted into water

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
At 0 degree celsius, Water can be converted into ice by freezing and ice can be converted into water by melting.

So at 0 degree Celcius, water and ice can co-exist. It takes some time for the conversions to take place and in that time interval, both ice and water are present.
1 5 1