Re: Broadcast TV Fee. Pretty much everyone on cable tv pays the Broadcast TV fee, and it's not just particular to Comcast. Broadcast stations [your local stations] charge the cable companies fees to carry their programs. In turn, cable companies pass those fees along to the customers. All cable tiers carry the broadcast channels. So, basically, yes, you'll be paying that $5 Broadcast TV fee.
Growth factors are organized into three categories. Some bacteria (e.g. E. coli) do not require any growth factors: they can synthesize all essential purines, pyrimidines, amino acids and vitamins, starting with their carbon source, as part of their own intermediary metabolism.
Any organism that cannot provide its own sustenance is known as a heterotroph, and these come in every size from the large blue whale all the way down to certain types of tiny protists. All... Any organism that cannot provide its own sustenance is known as a heterotroph, and these come in every size from the large blue whale all the way down to certain types of tiny protists. All heterotrophs require sustenance from organic material that comes from other organisms, whether dead or living.