Answer:
Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy
Explanation:
It slowly makes the ground softer making it easier for it to dissolve
Answer:
Answer is D. Transform faults.
Explanation:
The transform fault is situation where the tectonic plates slide past one another. It can also be described as a conservative boundaries because it does lead to the creation or destruction of crust. But , the build up of pressure between two plates along the faults can produce earthquakes.
In this case, volcanoes settings can not be found in the transform faults because there is absence of volcanoes vent, which will allow the passage of the molten rock to the surface.
Religious and ethnical problems.
It was one of the largest empires of the world with many different ethnicities. The problem was to unite people under one rule.
Another problem was communication. It was hard to transfer knowledge and news to all parts of the empire because it was too large.
China
India
Vietnam
Albania
Papua new guinea
Micronesia