Why is transpiration a necessary evil

for movement of water through an organism

Explanation:

transpiration is the process by which water is transported from the roots to the leaves of a plant through the xylem

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .