Trees un Maths.

Biologists who study ecosystems they want to know the vegetation of a forest or an area, but it is difficult to know with precision the length of the mass of the roots of a plant without put it out.
Until now became more or less precise estimates, but a group of scientists from Cornell University found that there is a fixed proportion between the mass of the leaves of any plant and the mass of their roots. They used a mathematical method called allometry*, and found hundreds of different plants studied
*Allometry: In biology refers to changes in relative size of body parts correlated with changes in the total size.

By Merce y Cris :)