It's not clear what kind of differentiation. But I think that the most suitable option is the second one, so the answer is: The process of differentiation results in <span>animal cells</span>.
It may make birds confused as to when the food source will be there, so they stop visiting because the food source isn't there when they thought it was going to be. So I think they would stop migrating because of confusion mainly.
Answer:
Transcription is how DNA is copied.
Meteorology is the study of the Earth's atmosphere and the variations in temperature and moisture patterns that produce different weather conditions. Some of the major subjects of study are such phenomena as precipitation (rain and snow), thunderstorms, tornadoes, and hurricanes and typhoons.
In the disease "<span>cystic fibrosis" the lungs get filled with too much mucus.</span>