One possible explanation for past climate changes is the movement of earth's Continents .
Answer:
The vast majority of European countries will have problems because of population decline, with the ones in the eastern half of the continent being more affected.
Explanation:
As a whole, Europe is a continent that is having big problems with population decline. Just three countries in the continent experience slight population growth, while all others either stagnate or experience a decline. Now when it comes to birthrates and death rates, the differences are minuscule across the continent, but migration is something that makes the difference better.
While both the western and eastern half have low birthrates, the western, richer side doesn't really lose population but has a rough stagnation. This is due to the fact that it is an attractive destination for migrants, including migrants from the poorer eastern half of Europe, so the numbers are relatively static. The eastern half of Europe though, not just has low birthrates, but it also losses a lot of its population because it migrates toward the western half in search of a better life. Also, it is not very attractive for migrants from other regions, so it experiences a rapid population decline. The two most extreme cases in the last three decades are Macedonia and Bulgaria, each losing roughly between 20 and 25% of their populations.
The largest example of forced migration is The Expulsion Of The Germans
Answer:
The correct options are: a. the number of additional neutrons of an isotope is too large; d. the number of additional neutrons of an isotope is too small
Explanation:
The chemical elements that have the same number of protons in the nucleus but different number of neutrons are known as isotopes. Isotopes can be stable or unstable.
The isotope having an unstable nucleus, due to the presence of additional neutrons in the nucleus of the atom, is known as a radioisotope.
Also, chemical elements that have atomic number greater than 83 have unstable nuclei and thus they are called radioisotopes.
