Answer:
Genetic variation.
Explanation:
It is caused by genes inherited from parents to offspring. It is a result of genetic information from parents.
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Answer:
A. Democracy spread throughout the region
Explanation:
After the collapse of the Soviet Union, Eastern Europe had slowly integrated a democratic government. This however does not mean it was perfect, most of them are corrupted but even Russia had declared itself a Republic after the end of the Communist Regime.
Answer:
Tectonic plates
Explanation:
In general, earthquakes are due to the immense vibrations from the shifting of tectonic plates. In the specific case of the San Andreas Fault, there is one issue. It is directly on top of a boundary between two tectonic plates. So, when either one of the plates shifts, extreme earthquakes occur due to the location being on top of the source.
The magma chamber below the Yellowstone caldera. It's located in Yellowstone national park.
