Pyroclastic materials include:a
volcanic bombs, pillow lavas, and volcanic ash.
b. volcanic bombs, lapilli, and volcanic ash.
c. pillow lavas and nuée ardentes.
d. nuée ardentes and lahars.
e. none of these
B
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Dust in the atmosphere is responsible for which of the following?
a. Ozone formation acting as a catalyst for cloud destruction b. Neon formation acting as a catalyst for cloud destruction c. Argon formation acting as a catalyst for cloud construction d. Helium formation acting as a catalyst for cloud construction e. Methane formation acting as a catalyst for cloud destruction
Which fossil fuel generally contains the greatest concentrations of pollution-causing contaminants?
A) Uranium B) Natural gas C) Oil D) Coal
A notable political process in modern Europe, often related to issues of linguistic, religious, and ethnic identity, is __________, the dispersal of political powers to ethnic minorities and other subnational groups
Fill in the blank(s) with correct word
Which country in Southeast Asia was formerly known to have the best healthcare, high literacy rate, and an efficient civil service, but now known as one of the world's most repressive places to live?
a. Myanmar b. Laos c. Cambodia d. Thailand e. Sri Lanka