Question

3. Why does the Torrid zone have the maximum temperature?
4. What is the significance of Greenwich Mean Time?
5. Why is the Standard Meridian selected by a country a multiple of 7.5"?​

Answer 1

The standard meridian is taken as the nearest longitude which is multiply of 7.5 of deg to make it easy

Answer 2

Answer:

3.The torrid zone receives themaximum amount of heatthroughout the year because the rays of the sun fall vertcally on this regon. This is located between the tropic of Cancer and Tropic of Capricorn in 23 1/2N to 23 1/2 S.

4.As the reference for GMT, the Prime Meridian at Greenwichtherefore became the centre of world time and the basis for the global system of time zones. ... It was recommended that themeridian line would indicate 0° longitude. Therefore this also became the start of the Universal Day.

5.IN ANCIENT TIMES, SUN WAS THE ONLY MEANS TO TELL THE TIME. PEOPLE USED TO SEE THE PATH OF THE SUN IN THE SKY TO ESTIMATE THE TIME.