why should Europe be concerned with changes in population trends ? PLEASE HELP ASAP :)) 25 POINTS! NO GOOFY ANSWERS PLEASE!!!

Twenty European countries had population gains in 2010, while seven countries had population declines, according to a report released by Eurostat, the statistical agency of the European Union. The total population grew by 1.4 million, to 502.5 million as of January 2011, according to provisional data. The countries with declines, mainly in Eastern Europe, included Bulgaria, Germany, Latvia, Lithuania, Hungary, Portugal and Romania

Explanation:

Since fertility rates were already low in certain European nations, the number of deaths are expected to rise as the baby boom generation ages.

what are the options?

answer; participant observation method;