Answer:
Stratovolcanoes
Explanation:
But that's just one type of volcano – the stratovolcano (or composite volcano). Stratovolcanoes consist of many layers (strata) of hardened lava, tephra, pumice, and volcanic ash. They generally have steep slopes and are the most common type of volcanoes on Earth.
source from: https://www.zmescience.com/other/science-abc/types-of-volcano/
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The United States adopted a policy of isolationism after the
First World War. They had lost many men
during the conflict and did not want to get involve in another war. They also had to deal with the Depression. They continued this policy until the outbreak
of the Second World War.
Year, 1960 is when Congo gained its independence.
Answer: The results of this study revealed that performance decreased when landmarks were removed that has been viewed longer.