E Coli bacterium are about 2.0 micrometers in length and .25 to 1 micrometer in diameter. In comparison, a red blood cell is about 6 to 8 micrometers in diameter and a thickness that ranges from .8 to 1 micrometer in the center to 2 to 2.5 micrometers at the thickest point.
<span>The state in which all body systems are functioning smoothly and in equilibrium is homeostasis.</span>
Caused by sexual contact are more difficult to treat..
i believe the answer to be B
