OKAY, so you find a quote, and you make sure to mark the page/paragraph because it makes it easier to find. You then add your notations, which include your reactions to the quote, or maybe your thoughts on it when it comes to the context of the article.
Answer:
while pockets of high dependency ratios exist in the Southwest along the Mexican border and in southern California
Explanation:
A neutral atom of Cobalt has an atomic number of 27 and an atomic mass of 59.
Co has 12 neutrons