Landslides and avalanches are the most dramatic, sudden, and dangerous examples of earth materials moved by gravity. Landslides are sudden falls of rock, whereas avalanches are sudden falls of snow.
"The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago, to the beginning of the Devonian Period, 419.2 Mya.<span> <span>Wikipedia."
https://www.google.com/search?q=He+Silurian+period+occurred&rlz=1C1RUCY_enUS760US760&oq=He+Silurian+...
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Answer:
a documentary about the holocaust
Explanation:
documentaries contain primary sources like pictures and videos however they are interpreting them so they are typically not seen as a primary source as a whole
The correct answer is A. magma
Magma is just lava but when it's inside of the volcano. When it leaves the volcano it becomes lava.
<span>Elements that are in the same column (group) as it.
So, some elements would be Beryllium, Barium, Magnesium, and Strontium</span>
