At the point when a tree has been chopped down or felled, then it is moderately simple to work out its age by checking the development or yearly rings that can be seen on the sawn-off stump. Under the bark of a tree is a unique tissue (called the cambium) which frames new cells so that the tree can develop.

Contrasts in the rate at which cells are delivered by this tissue offer ascent to the yearly or development rings. On the off chance that conditions are useful for development (warm, general precipitation) then the ring that is shaped will be more extensive than that made in a year where the tree battles for water, or it is cool. There is one ring for every year of a tree's life.