What brings you down but never up?

What breaks yet never falls, and what falls yet never breaks?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

John was piloting a plane behind a car but was never able to overtake it. Why?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?