Answer:
Controlled burns are lit for a number of reasons. By ridding a forest of dead leaves, tree limbs, and other debris, a prescribed burn can help prevent a destructive wildfire. Controlled burns can also reduce insect populations and destroy invasive plants. In addition, fire can be rejuvenating for the plants.
Yes it is, its stored as a carbohydrate molecule made up of thousands of smaller pieces of glucose.
There's no any exact scientific results and nobody currently know what will exactly happen, but some scientists suggested that the sun might expand and dies that leads to the end of the world but some says there will be a new sun being born and like that.