<span>What muscle circles the eyes socket and closes the eyelid?
<span>The orbicular muscle</span></span>
<span>Gas-powered vehicles, chemical refineries, industrial plants, vegetation, and forest fires all emit what into the atmosphere?
they admit carbon dioxide
which is co2</span>
Silent mutation are cause by a point mutation and have no effect of the function because they code for the same amino acid
mutations is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke (almost like cancer)
