Astronomers use light years to measure distances in space because space is so massive and distances so far that conventional numbering is inadequate and unmanageable. One light year is a distance measurement equivalent to six trillion miles.
The primary role of DESMOSOME is to blind animal cells together. It is the formation of a structure from protein plaques in the cell membranes linked by filaments. This links to a the protein that is attached to the cell surface adhesion.
True because, more variation increases the species fitness, the ability to survive and reproduce. Allowing the organism to pass on their beneficial traits (advantageous traits), to their offspring.
