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.
Forested areas or areas with dark soil absorb more radiation and have lower albedos. Human and natural processes have changed the albedo of earthâs land surfaces. For example, earthâs average albedo was much higher during the last ice age than it is today. Human impacts such as deforestation, air pollution, and the decrease in Arctic sea ice have also affected albedo values. These changes alter the net amounts of energy absorbed and radiated back to space.