1.What Is a Duplex House?
- When a house is constructed with two stories, it is considered a duplex.
 
- The rooms in a duplex are divided into two floors as per the choice and comfortability.
 
- The floors are interconnected with each other by stairs.
 

2.What Is a Cottage? How Is It Different From Huts?
- Both cottage houses and huts are seen chiefly in villages or the countryside.
 
- But both differ in terms of needs, the number of rooms and construction materials.
 
| Cottage House | 
Hut | 
| Small or big house for a family to live in. | 
Small in size, either for a family or for storage. | 
| More than one room and may have 2nd storey. | 
Single common living space without 2nd storey. | 
| Built using bricks, stones, etc. | 
Built using mud, clay, wooden twigs, grass, etc. | 
3.Many Forts Used to Have Been Surrounded by a Moat and Many Bastions in the Walls. Why?

- In the old days, the kings built forts to defend the territory and protect the people of their kingdom.
 
- The moats were the deep trenches around the forts that were usually filled with water which was used to keep enemy troops away from the main wall.
 
- The bastions in the fort walls were excellent places to keep the canons and garrison, the troops with bows and arrows or rifles as they were built, keeping a good angle for view.
 
4.Why Do Honeybees Make Beehive Cells Only in Hexagonal Shape?
- The hexagonal shape ensures better and more efficient use of space.
 
- Moreover, less bee wax is used to make this shape.
 
- Hence this saves the effort of the worker bees and saves the beeswax.
 
