Question

On Earth, water can exist as a solid, a liquid, or a gas. Why?

Answer 1

Molecules in liquid don't all have the same energy, this is why water on Earth can exist as a solid, liquid or gas.

Answer 2

Step-by-step explanation:

The Earth has perfect conditions which allows water to exist in all the three states. These conditions are:

1. Earth is in the Goldilocks zone around the Sun which results in an optimum temperature.

2. The atmosphere of the Earth maintains suitable temperature and pressure.

The presence of water in all the three forms helped the life to develop on Earth.