Question: why is water required for a living thing to grow

Gonzalo Delgado-Pando answered on 7 Nov 2017:

That is a great question. I don’t know if I will be able to explain it correctly but I will try.

Water is also called the universal solvent because it can dissolve most of the things (like when you add sugar to water and you stirr it, it dissapears, it gets dissolved). Water is liquid at temperatures above 0 degrees and below 100, in this range of temperatures most of the living things work. Let’s say humans, we have a body temperature around 36 degrees celsius, so at that temperature water is still a liquid. These two things are important because being the universal solvent makes the water a good way to transport substances as they are dissolved in it and being a liquid allow the water to move easily.

Cells are the basic units of life. There are living organisms with only one cell or others with several millions (like animals or humans). These cells need different substances (like food for them) and produce another substances (like if they were pooing), water is required to transport these substances inside and outside the cell. And that makes water a requisite to live. If the cells don’t get substances from the outside or cannot get substances out of them, they will die.
I hope I have answered your question but if you need more explanation just comment and I will try to explain it better.