1 Tilloo finds the "forbidden passage" in some mysterious way.

Explanation

One day, Tilloo's father was dozing off. The child took his father's ID card. He then moved in the direction of the restricted hidden route. He was able to access the passageway thanks to the card.



2 When Tilloo left his underground residence, what did he expect to see?

Explanation:

After emerging from his underground residence, Tilloo longed to see the daylight or the stars.



3 Why did Tilloo's father counsel him against attempting to travel to the planet's surface?

Explanation:
Tilloo's father warned him against attempting to reach the planet's surface since he wouldn't be able to endure the frigid conditions or the thin air.


4 What alterations had taken place that made it necessary for humans to dwell underground?

Explanation:

All animals and birds died as a result of the sun's fluctuating heat. The air got thin and human beings may freeze to death.