The answer is horses, cattle and pigs
For the answer to the question above, I would say that the Netherlands
was one good example of what are the dangers when creating polders that
are below the sea level. The water always goes where there is a lower
level of the land. That's when the flooding occurs. You can't have a
flood on the mountain. Water will always find its way to lower areas of
land.
Answer:
Their gravitational pull is too weak.
Explanation:
Earth, Mars and Venus are terrestrial planets that used to have <em>hydrogen</em> and <em>helium </em>in their atmospheres. However, <u>these</u><u> light elements</u><u> were lost over time as they evaporated.</u> This is primarily due to the planets' having weak gravitational pull when compared to the other bigger planets like <em>Jupiter, Saturn</em> and<em> Uranus </em>and the planets' warmer temperature that results to having a<em> thin atmosphere</em>.
On the other hand, the bigger planets have<u> large masses</u> and are <u>cold </u>enough to prevent both hydrogen and helium molecules from escaping the atmosphere.
Answer: lack of modernized industries. B is correct. However, Eastern Europe is not a homogeneous and contains very different countries and regions.
Explanation: They lack centers of excellence, they lack effective connection between research/inventions/innovations and fabrication/technology/production. In this respect these countries fall behind more progressive north-western Europe.