water can<em> </em><em>exist</em><em> </em><em>in</em><em> </em><em>three</em><em> </em><em>states</em><em>;</em><em> </em><em>liquid</em><em>,</em><em> </em><em>solid</em><em> </em><em>and</em><em> </em><em>gases</em><em>.</em>
Explanation:
At temperature below zero degree Celsius, water exists as a solid but as it absorbs temperature from Its surroundings, it undergoes melting and turns into liquid water. More application of heat makes it boil leading to the evaporation and vapourisation of water molecules( note: evaporation occurs at all temperature).
Chloroplasts contribute to the cell by housing the photosensitive pigment chlorophyll which is able to facilitate the conversion of light energy to chemical energy.
