Which of the following settlements is nucleated?

Figure 1 represents the export of rice by four regions in Country XX in the year 2009. One dot represents 20,000 tonnes of exported rice was used as the scale of the dot map. Study and use the dot map below to answer this question.
Which region exported the highest tonnes of rice?

Figure 1 represents the export of rice by four regions in Country XX in the year 2009. One dot represents 20,000 tonnes of exported rice was used as the scale of the dot map. Study and use the dot map below to answer this question.

By how much tonnes was the export of rice from region T higher than that from region U?

The total export of rice for regions R and T is

The sharp pillars hanging from the roof of a cavern in limestone regions are called