I believe that is a trick question, “The degree of metamorphism is a function of pressure, heat and time. During orogenic events, the metamorphism of the rocks can take 100's of thousand to millions of years. Too much heat cannot be applied at once since the rock will melt and recrystallize into an igneous rock” i’ve found those same answers on other websites as well. meaning there really isn’t a right answer.
Nuclear energy comes from the splitting of uranium atoms
Nation states are difficult to create because of colonies ((tell me if u need to know why because I can help with that))
The answer is simple Neptune because it is the only blue planet.
Answer:
(A) It connects Western and Central Europe.
(C) It is an important trade route.
(D) It is used for transportation.
Explanation:
The Danube is a river in central Europe and the second longest in this continent (the first is the Volga), which flows mainly through ten countries (Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova and Ukraine) to finally flow into the Black Sea.
This river is of great importance for Eastern Europe because its channel serves as an international bridge for agricultural, fishing, tourism, commercial and industrial activities. In addition, the majority of the population that lives in its vicinity, depends on the water of the Danube to carry out its activities, which is why there is a large number of reservoirs and dams on its way.
Another important aspect is that the Danube has a high economic potential, due to its capacities for transport, commerce and tourism, so the use and use of its waters has been promoted.
