D. high and low levels of silica in the different type of lava.
Explanation:
The volcanoes have different types of explosions. Some tend to be highly explosive, some less explosive, some don't have explosions at all, while some have combinations of different eruptions. The reason for this diversity in the eruption types is mostly the composition of the magma, or rather how high is the silica content in it.
Basically, the higher the silica level in the magma the higher the explosiveness, and the lower the silica level the lower the chances of explosiveness. This is the case because the higher amount of silica makes the magma thicker, so the gasses are trapped and they explode, while when the lower silica content makes the magma less thick, so the gasses are not trapped and explosions are lacking.
Earth's rotation causes air and water in the northern hemisphere to appear to move right and in the southern hemisphere to appear to move left
I only know that number 7) is equator <span />
Answer:
Egypt, as Herodotus wrote, is the Gift of the Nile. ... No Nile, no Egypt. It's that simple. But the Nile isn't Egypt's alone: its flow, and those of its tributaries, also waters the soils, and is fed by the rivers, of Sudan, Ethiopia, and several other African nations.
Explanation
if u need anymore help with anything just comment and ill give u my email
Answer:
European Union created an open market where goods and people are being transferred without limitations that existed when the borders were closed. That is why people can freely travel, get jobs and many other benefits inside the member countries of EU.
Explanation:
The idea of EU started developing after WW2, and the countries that started developing that idea were France, Germany and Benelux countries.
It has developed into one of the most important economic forces in the world, and also unified Western Europe in a common struggle for a better life.
