Some materials can dissolve in water some cannot.
We can only taste edible materials that dissolve in water.
We taste to check the presence of the material in water.
We can separate the materials that cannot dissolve in water by using a filter.
Plants need the right amount of water.
Plants wilt and die if they do not get enough water.
However, too much water may kill the plants.
When plants grow, they become bigger, taller and have more leaves.