Obsere the data given in the following table.
In which year lake - water spread are is more ? Why ?

Obsere the data given in the following table. What are th reasons for decrease in lake area ?

Obsere the data given in the following table. How do you think weeds are more in the lake ?

Obsere the data given in the following table. How do the above reasons lead pollution ?

Obsere the data given in the following table. What could be the reasons for the migration of birds to this lake ?

Obsere the data given in the following table. How was the threat to the lake due to pollution discovered ?

Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is 0.040 (assume the density of water to be one). Use the data given in the following table to calculate the molar mass of naturally occuring argon isotopes :

Observe the given table and answer the following questions. how many litres of water are required for a person to take a bath in one day?

Observe the given table and answer the following questions Which birds are carnivores?

Observe the given table and answer the following questions in which activity we can not save water?