Evaporation of water from plants:)
An astronomical unit (AU) is the approximate distance from the earth to the sun. The answer is D.
Answer:
Sigma factors bind to the promoter region of a particular gene and facilitating the binding of RNA Polymerase to the promoter region (formation of the RNA polymerase holoenzyme complex) in order initiate transcription of the gene.
Put simply - Helps RNA Polymerase do it's job.
The Littoral Zone bkihgig
