High humidity causes low evaporation of water. 

Four actions are listed below. Classify them into the table by writing A, B, C and D under the appropriate headings. 

While walking to school one sunny morning, Malathi noticed a small puddle of water on the pavement. However, when she was returning home, she saw that the puddle had disappeared. 

How did the puddle disappear? 

While walking to school one sunny morning, Malathi noticed a small puddle of water on the pavement. However, when she was returning home, she saw that the puddle had disappeared. 

If Malathi had seen the puddle of water on a cloudy day, what would she have observed in the afternoon? Explain your answer.