Question

jal h sona ise na khona par eassy in hindi

Answer 1

Water is the elixir of life. It is essential for human existence.  It is bizarre that we care so much for gold (sona) but do not care for water.  As a result, industries pollute water bodies, etc.  Maharashtra has had to pay a huge price for this attitude.  Recently, there was a massive drought in that state to the extent that hospitals were not able to conduct operations simply because no water was available. Water trains were used to transport water. 

Therefore, water is very important. Use example as the one above to make your case. Also mention how while Mars is pretty much like Earth but just because there is no water (or at least it is not in sufficient quantity) there there is no life.