What happened when the wheel was invented?

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)

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Today is a very icy and cold morning in Newcastle. Mr Shearer, an office bus driver arrived to pick up the employees from the last stop. Shearer suddenly remembers that he needs to pick a newly joined 4miles to the north. Mr Shearer lost his direction compass, a few minutes later Shearer is able to figure that he is moving in the correct direction i.e. north. How did Shearer know that he is moving in the correct direction?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?