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The circular depression left when the roof of a magma chamber collapses is called a/an __________.
Q16: The Andes Mountains were formed by convergence
Q18: Fossil fuels are renewable.
Q22: The smallest unit of geologic time is
Q26: Keratin<br>A)Discoloration of fingers or toes after exposure
Q31: Complementary medicine depends greatly on educating and
Q31: _ is the most active volcanic body
Q42: The Moon's _ are flat expanses of
Q44: The principle of _ _ states that
Q46: Where two oceanic plates converge, one sinks
Q48: Originally, all of the stars in the