Why is the nucleus called the control center of the cell?

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above