Moho discontinuity refers to a discontinuity between the ________ and ________ layers of the earth.
A. Sial and Sima
B. Sima and Mantle
C. Sial and Mantle
D. Mantle and Core
Answer: Option B
A. Sial and Sima
B. Sima and Mantle
C. Sial and Mantle
D. Mantle and Core
Answer: Option B
The years 1700, 1800 and 1900 were
A. Leap years
B. Not leap years
C. Famine years
D. Years of natural calamities
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