Kerala Board Solutions for Chapter: Life - Giving Water, Exercise 8: Let us assess

Among the various properties of water, which are applicable to the following situations?

i) Water shortage due to excessive sand mining in rivers.
ii) The water shortage caused in nearby wells due to the exploitation of water from a well rich in water.

The gum which sticks to the knife while cutting a jack fruit is removed using kerosene. Which property of kerosene is utilised here? 

We have discussed various methods of disaster management and prevention. Find out a few methods to escape from natural calamities which are a threat to your place. Compile the information collected and prepare a notice for the attention of the local population.
 

Complete the following illustration related to water.