The fast food meals and lack of stress relief and relaxation.
Enhancers work by serving as binding sites for transcription factors--proteins that regulate transcription.<span> Enhancers lead to the production of regulatory proteins. The proteins bind to regulatory sites of DNA, triggering transcription of cell-specific proteins.</span>
I think A. It’s the only one that’s really makes since for this question.
Diffusion allows the exchange of substances; the entry of oxygen, proteins, etc into the cell and the removal of waste substances.
At least two parallel channels of communication flow through each lateral geniculate nucleus. One runs through the parvocellular layers and a second runs through the magnocellular layers.
