Coconut palms continue to produce roots from the base of the stem throughout their lives. The number of roots produced depends on the age of the tree and the environment, with more than 3,600 roots possible on a tree that is 60 to 70 years old.
Albedo (/Ã¦lËbiËdoÊ/) is the whiteness of a surface. It is a reflection coefficient, and has a value of less than one. Albedo is derived from Latin albedo whiteness (or reflected sunlight) in turn from albus white, is the diffuse reflectivity or reflecting power of a surface. The albedo of a surface is the ratio of radiation reflected from the surface to the incident radiation. Its dimensionless nature lets it be expressed as a percentage and is measured on a scale from zero (no reflection) of a perfectly black surface to 1 for perfect reflection of a white surface.
For example, land and ocean have low albedos (typically from 0.1 to 0.4) and absorb more energy than they reflect. Snow, ice, and clouds have high albedos (typically from 0.7 to 0.9) and reflect more energy than they absorb. Earthâs average albedo is about 0.3. In other words, about 30 percent of incoming solar radiation is reflected back into space and 70 percent is absorbed.