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 answer is greenhouse gases
The answer would be water.
They appear to be green because of the chloroplast in the cells.
Mangroves<span> provide a number valuable </span>ecosystem services<span> that contribute to human well being including provisioning, regulating ,and habitat.
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