Why does every plant cell have a nucleus

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick