Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

Prove that twice of ten is the same as twice of eleven.

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

The world's largest Thanksgiving turkey was on display at a fair. Everyone was admiring it when suddenly a woman ran up and shot the turkey and left. Everyone knew her yet nobody made any attempts to stop or report her. Why?

Count the squares in the matchstick puzzle below?

Using exactly three matchsticks, can you divide the area into two equal parts?

What does this say?

XLR8

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)