The forms of pollution that each energy source cause include air, land, water, and even space and noise pollution. The economy influences energy source choices by the cost efficiency consideration of choosing an energy source. There must be enough money to run the energy production and maintain the energy source. Location influences energy source choices in such a way that different locations offer different availability of different resources.<span />
La mejor razón para usar una sonda de temperatura en lugar de un termómetro es registrar mediciones continuas durante varios minutos. La temperatura es la cantidad física que expresa el frío y el calor. Se mide con el termómetro.
An operon is a cluster of genes that are transcribed together to give a single messenger RNA (mRNA) molecule, which therefore encodes multiple proteins (Fig. 16.11). Such polycistronic mRNA is typically found in prokaryotes.